Kansas CDL Hazmat study materials
Kansas CDL Hazmat study resources

Kansas CDL Hazmat cheat sheet

Kansas CDL Hazmat · Keep the key ideas within reach.

Quick reference

Hazardous Materials Endorsement (H) Knowledge Requirements

  • An H endorsement is required to drive a CMV transporting placarded quantities of hazardous materials, and it is added to a Class A, B, or C CDL; it cannot stand alone.

  • The hazmat knowledge test is a separate written test from the general CDL tests; passing it requires a score of at least 80 percent, and it must be retaken at each renewal.

  • The hazardous materials table (49 CFR 172.101) assigns each material its hazard class, UN/NA identification number, packing group, label codes, and required placards.

  • Placards are required for 1,001 pounds or more aggregate gross weight of a single hazard class, for any quantity of a Table 2 material in the placarding table, and for bulk packages.

  • Class 1 explosives are divided into six compatibility groups for mixed loading; Division 1.1 through 1.3 generally may not be loaded with detonators or with Division 1.5.

  • Shipping papers must accompany the shipment, be within the driver's reach while seated, and be kept in a pouch on the driver's door or in clear view when the driver leaves the cab.

  • A hazardous materials endorsement holder must report to the employer any suspension, revocation, or cancellation of the endorsement, and must not operate a CMV hauling hazmat without a valid endorsement.

  • The security threat assessment (STA) required for the H endorsement is conducted by TSA; a disqualifying criminal history or a finding of not being a lawful permanent resident results in denial.

  • Rail crossings, tunnels, and populated areas may restrict hazmat routes; the driver must follow designated routes and stop requirements and may not smoke or carry a firearm while operating a placarded vehicle.

Quick reference

Entry-Level Driver Training (ELDT) for the Hazardous Materials Endorsement

  • ELDT for the H endorsement is required before the applicant may take the state hazmat knowledge test; training must be completed by a registered training provider.

  • The H endorsement curriculum covers basic introductory hazmat content, operational requirements, and reporting and recordkeeping, plus a security awareness module.

  • The training provider must be listed on the FMCSA Training Provider Registry, and the provider submits the driver's completion record electronically to the registry.

  • The H endorsement theory curriculum requires a minimum of 20 total clock hours of instruction across the three required units.

  • ELDT completion for the H endorsement does not expire for purposes of taking the knowledge test, but the endorsement itself must be renewed and the knowledge test retaken at renewal.

  • A driver who already holds the H endorsement and is only renewing or transferring it is not required to repeat ELDT, but must still pass the knowledge test and the TSA security threat assessment.

  • ELDT is required for the H, N, P, and S endorsements and for the Class A and Class B CDL, but not for the Class C CDL or for the M endorsement.

  • The training provider must assess the driver's knowledge before certifying completion; self-certification by the driver alone is not sufficient.

Quick reference

Medical Examiner Certification Requirements for CDL Holders

  • A CDL holder must be examined by a medical examiner listed on the FMCSA National Registry of Certified Medical Examiners and must carry a valid Medical Examiner's Certificate.

  • The medical examiner completes the MCSA-5875 (Medical Examination Report) and issues the MCSA-5876 (Medical Examiner's Certificate) with an expiration date not to exceed 24 months.

  • A driver with a medical variance (such as a vision or insulin-treated diabetes exemption) must carry the exemption document with the Medical Examiner's Certificate.

  • The driver self-certifies the type of operation (interstate non-excepted, interstate excepted, or intrastate) and must provide the medical certificate to the state licensing agency.

  • The medical examiner must be recertified and listed on the National Registry; an examination by a non-listed provider is not valid for CDL purposes.

  • Vision standards require at least 20/40 corrected in each eye and a field of vision of at least 70 degrees in the horizontal meridian.

  • Hearing standards require the driver to perceive a forced whisper at not less than 5 feet, with or without a hearing aid, or to meet an equivalent audiometric standard.

  • A driver who fails to maintain a valid medical certificate is placed out of service and may not operate a CMV until a valid certificate is provided to the state.

Quick reference

Drug and Alcohol Clearinghouse Requirements

  • The FMCSA Drug and Alcohol Clearinghouse is a database that records drug and alcohol program violations for CDL drivers; employers, drivers, and medical review officers use it.

  • A pre-employment query of the Clearinghouse is required before an employer may hire a CDL driver, and the driver must consent to the query.

  • An annual query of the Clearinghouse is required for all employed CDL drivers, conducted as a limited query with the driver's consent on file.

  • A driver with a prohibited status (refusal to test, positive test, or actual knowledge) may not perform safety-sensitive functions until completing the return-to-duty process with a substance abuse professional.

  • A driver must be registered in the Clearinghouse to respond to employer queries and to view their own record; registration is separate from the CDL itself.

  • Employers must report violations, including positive test results, refusals, and actual knowledge, to the Clearinghouse within three business days.

  • A driver may request a correction of Clearinghouse information and may designate a substance abuse professional or other representative to access the record.

  • The Clearinghouse final rule requires reporting of violations for all CDL drivers, including those operating in excepted interstate and intrastate commerce.

Quick reference

Hazardous Materials Endorsement (H) Knowledge Requirements

  • An H endorsement is required to drive a CMV transporting placarded quantities of hazardous materials, and it is added to a Class A, B, or C CDL; it cannot stand alone.

  • The hazmat knowledge test is a separate written test from the general CDL tests; passing it requires a score of at least 80 percent, and it must be retaken at each renewal.

  • The hazardous materials table (49 CFR 172.101) assigns each material its hazard class, UN/NA identification number, packing group, label codes, and required placards.

  • Placards are required for 1,001 pounds or more aggregate gross weight of a single hazard class, for any quantity of a Table 2 material in the placarding table, and for bulk packages.

  • Class 1 explosives are divided into six compatibility groups for mixed loading; Division 1.1 through 1.3 generally may not be loaded with detonators or with Division 1.5.

  • Shipping papers must accompany the shipment, be within the driver's reach while seated, and be kept in a pouch on the driver's door or in clear view when the driver leaves the cab.

  • A hazardous materials endorsement holder must report to the employer any suspension, revocation, or cancellation of the endorsement, and must not operate a CMV hauling hazmat without a valid endorsement.

  • The security threat assessment (STA) required for the H endorsement is conducted by TSA; a disqualifying criminal history or a finding of not being a lawful permanent resident results in denial.

  • Rail crossings, tunnels, and populated areas may restrict hazmat routes; the driver must follow designated routes and stop requirements and may not smoke or carry a firearm while operating a placarded vehicle.

Quick reference

Entry-Level Driver Training (ELDT) for the Hazardous Materials Endorsement

  • ELDT for the H endorsement is required before the applicant may take the state hazmat knowledge test; training must be completed by a registered training provider.

  • The H endorsement curriculum covers basic introductory hazmat content, operational requirements, and reporting and recordkeeping, plus a security awareness module.

  • The training provider must be listed on the FMCSA Training Provider Registry, and the provider submits the driver's completion record electronically to the registry.

  • The H endorsement theory curriculum requires a minimum of 20 total clock hours of instruction across the three required units.

  • ELDT completion for the H endorsement does not expire for purposes of taking the knowledge test, but the endorsement itself must be renewed and the knowledge test retaken at renewal.

  • A driver who already holds the H endorsement and is only renewing or transferring it is not required to repeat ELDT, but must still pass the knowledge test and the TSA security threat assessment.

  • ELDT is required for the H, N, P, and S endorsements and for the Class A and Class B CDL, but not for the Class C CDL or for the M endorsement.

  • The training provider must assess the driver's knowledge before certifying completion; self-certification by the driver alone is not sufficient.

Quick reference

Medical Examiner Certification Requirements for CDL Holders

  • A CDL holder must be examined by a medical examiner listed on the FMCSA National Registry of Certified Medical Examiners and must carry a valid Medical Examiner's Certificate.

  • The medical examiner completes the MCSA-5875 (Medical Examination Report) and issues the MCSA-5876 (Medical Examiner's Certificate) with an expiration date not to exceed 24 months.

  • A driver with a medical variance (such as a vision or insulin-treated diabetes exemption) must carry the exemption document with the Medical Examiner's Certificate.

  • The driver self-certifies the type of operation (interstate non-excepted, interstate excepted, or intrastate) and must provide the medical certificate to the state licensing agency.

  • The medical examiner must be recertified and listed on the National Registry; an examination by a non-listed provider is not valid for CDL purposes.

  • Vision standards require at least 20/40 corrected in each eye and a field of vision of at least 70 degrees in the horizontal meridian.

  • Hearing standards require the driver to perceive a forced whisper at not less than 5 feet, with or without a hearing aid, or to meet an equivalent audiometric standard.

  • A driver who fails to maintain a valid medical certificate is placed out of service and may not operate a CMV until a valid certificate is provided to the state.

Quick reference

Drug and Alcohol Clearinghouse Requirements

  • The FMCSA Drug and Alcohol Clearinghouse is a database that records drug and alcohol program violations for CDL drivers; employers, drivers, and medical review officers use it.

  • A pre-employment query of the Clearinghouse is required before an employer may hire a CDL driver, and the driver must consent to the query.

  • An annual query of the Clearinghouse is required for all employed CDL drivers, conducted as a limited query with the driver's consent on file.

  • A driver with a prohibited status (refusal to test, positive test, or actual knowledge) may not perform safety-sensitive functions until completing the return-to-duty process with a substance abuse professional.

  • A driver must be registered in the Clearinghouse to respond to employer queries and to view their own record; registration is separate from the CDL itself.

  • Employers must report violations, including positive test results, refusals, and actual knowledge, to the Clearinghouse within three business days.

  • A driver may request a correction of Clearinghouse information and may designate a substance abuse professional or other representative to access the record.

  • The Clearinghouse final rule requires reporting of violations for all CDL drivers, including those operating in excepted interstate and intrastate commerce.

Quick reference

Hazardous Materials Endorsement (H) Knowledge Requirements

  • An H endorsement is required to drive a CMV transporting placarded quantities of hazardous materials, and it is added to a Class A, B, or C CDL; it cannot stand alone.

  • The hazmat knowledge test is a separate written test from the general CDL tests; passing it requires a score of at least 80 percent, and it must be retaken at each renewal.

  • The hazardous materials table (49 CFR 172.101) assigns each material its hazard class, UN/NA identification number, packing group, label codes, and required placards.

  • Placards are required for 1,001 pounds or more aggregate gross weight of a single hazard class, for any quantity of a Table 2 material in the placarding table, and for bulk packages.

  • Class 1 explosives are divided into six compatibility groups for mixed loading; Division 1.1 through 1.3 generally may not be loaded with detonators or with Division 1.5.

  • Shipping papers must accompany the shipment, be within the driver's reach while seated, and be kept in a pouch on the driver's door or in clear view when the driver leaves the cab.

  • A hazardous materials endorsement holder must report to the employer any suspension, revocation, or cancellation of the endorsement, and must not operate a CMV hauling hazmat without a valid endorsement.

  • The security threat assessment (STA) required for the H endorsement is conducted by TSA; a disqualifying criminal history or a finding of not being a lawful permanent resident results in denial.

  • Rail crossings, tunnels, and populated areas may restrict hazmat routes; the driver must follow designated routes and stop requirements and may not smoke or carry a firearm while operating a placarded vehicle.

Quick reference

Entry-Level Driver Training (ELDT) for the Hazardous Materials Endorsement

  • ELDT for the H endorsement is required before the applicant may take the state hazmat knowledge test; training must be completed by a registered training provider.

  • The H endorsement curriculum covers basic introductory hazmat content, operational requirements, and reporting and recordkeeping, plus a security awareness module.

  • The training provider must be listed on the FMCSA Training Provider Registry, and the provider submits the driver's completion record electronically to the registry.

  • The H endorsement theory curriculum requires a minimum of 20 total clock hours of instruction across the three required units.

  • ELDT completion for the H endorsement does not expire for purposes of taking the knowledge test, but the endorsement itself must be renewed and the knowledge test retaken at renewal.

  • A driver who already holds the H endorsement and is only renewing or transferring it is not required to repeat ELDT, but must still pass the knowledge test and the TSA security threat assessment.

  • ELDT is required for the H, N, P, and S endorsements and for the Class A and Class B CDL, but not for the Class C CDL or for the M endorsement.

  • The training provider must assess the driver's knowledge before certifying completion; self-certification by the driver alone is not sufficient.

Quick reference

Medical Examiner Certification Requirements for CDL Holders

  • A CDL holder must be examined by a medical examiner listed on the FMCSA National Registry of Certified Medical Examiners and must carry a valid Medical Examiner's Certificate.

  • The medical examiner completes the MCSA-5875 (Medical Examination Report) and issues the MCSA-5876 (Medical Examiner's Certificate) with an expiration date not to exceed 24 months.

  • A driver with a medical variance (such as a vision or insulin-treated diabetes exemption) must carry the exemption document with the Medical Examiner's Certificate.

  • The driver self-certifies the type of operation (interstate non-excepted, interstate excepted, or intrastate) and must provide the medical certificate to the state licensing agency.

  • The medical examiner must be recertified and listed on the National Registry; an examination by a non-listed provider is not valid for CDL purposes.

  • Vision standards require at least 20/40 corrected in each eye and a field of vision of at least 70 degrees in the horizontal meridian.

  • Hearing standards require the driver to perceive a forced whisper at not less than 5 feet, with or without a hearing aid, or to meet an equivalent audiometric standard.

  • A driver who fails to maintain a valid medical certificate is placed out of service and may not operate a CMV until a valid certificate is provided to the state.

Quick reference

Drug and Alcohol Clearinghouse Requirements

  • The FMCSA Drug and Alcohol Clearinghouse is a database that records drug and alcohol program violations for CDL drivers; employers, drivers, and medical review officers use it.

  • A pre-employment query of the Clearinghouse is required before an employer may hire a CDL driver, and the driver must consent to the query.

  • An annual query of the Clearinghouse is required for all employed CDL drivers, conducted as a limited query with the driver's consent on file.

  • A driver with a prohibited status (refusal to test, positive test, or actual knowledge) may not perform safety-sensitive functions until completing the return-to-duty process with a substance abuse professional.

  • A driver must be registered in the Clearinghouse to respond to employer queries and to view their own record; registration is separate from the CDL itself.

  • Employers must report violations, including positive test results, refusals, and actual knowledge, to the Clearinghouse within three business days.

  • A driver may request a correction of Clearinghouse information and may designate a substance abuse professional or other representative to access the record.

  • The Clearinghouse final rule requires reporting of violations for all CDL drivers, including those operating in excepted interstate and intrastate commerce.

Quick reference

Hazardous Materials Endorsement (H) Knowledge Requirements

  • An H endorsement is required to drive a CMV transporting placarded quantities of hazardous materials, and it is added to a Class A, B, or C CDL; it cannot stand alone.

  • The hazmat knowledge test is a separate written test from the general CDL tests; passing it requires a score of at least 80 percent, and it must be retaken at each renewal.

  • The hazardous materials table (49 CFR 172.101) assigns each material its hazard class, UN/NA identification number, packing group, label codes, and required placards.

  • Placards are required for 1,001 pounds or more aggregate gross weight of a single hazard class, for any quantity of a Table 2 material in the placarding table, and for bulk packages.

  • Class 1 explosives are divided into six compatibility groups for mixed loading; Division 1.1 through 1.3 generally may not be loaded with detonators or with Division 1.5.

  • Shipping papers must accompany the shipment, be within the driver's reach while seated, and be kept in a pouch on the driver's door or in clear view when the driver leaves the cab.

  • A hazardous materials endorsement holder must report to the employer any suspension, revocation, or cancellation of the endorsement, and must not operate a CMV hauling hazmat without a valid endorsement.

  • The security threat assessment (STA) required for the H endorsement is conducted by TSA; a disqualifying criminal history or a finding of not being a lawful permanent resident results in denial.

  • Rail crossings, tunnels, and populated areas may restrict hazmat routes; the driver must follow designated routes and stop requirements and may not smoke or carry a firearm while operating a placarded vehicle.

Quick reference

Entry-Level Driver Training (ELDT) for the Hazardous Materials Endorsement

  • ELDT for the H endorsement is required before the applicant may take the state hazmat knowledge test; training must be completed by a registered training provider.

  • The H endorsement curriculum covers basic introductory hazmat content, operational requirements, and reporting and recordkeeping, plus a security awareness module.

  • The training provider must be listed on the FMCSA Training Provider Registry, and the provider submits the driver's completion record electronically to the registry.

  • The H endorsement theory curriculum requires a minimum of 20 total clock hours of instruction across the three required units.

  • ELDT completion for the H endorsement does not expire for purposes of taking the knowledge test, but the endorsement itself must be renewed and the knowledge test retaken at renewal.

  • A driver who already holds the H endorsement and is only renewing or transferring it is not required to repeat ELDT, but must still pass the knowledge test and the TSA security threat assessment.

  • ELDT is required for the H, N, P, and S endorsements and for the Class A and Class B CDL, but not for the Class C CDL or for the M endorsement.

  • The training provider must assess the driver's knowledge before certifying completion; self-certification by the driver alone is not sufficient.

Quick reference

Medical Examiner Certification Requirements for CDL Holders

  • A CDL holder must be examined by a medical examiner listed on the FMCSA National Registry of Certified Medical Examiners and must carry a valid Medical Examiner's Certificate.

  • The medical examiner completes the MCSA-5875 (Medical Examination Report) and issues the MCSA-5876 (Medical Examiner's Certificate) with an expiration date not to exceed 24 months.

  • A driver with a medical variance (such as a vision or insulin-treated diabetes exemption) must carry the exemption document with the Medical Examiner's Certificate.

  • The driver self-certifies the type of operation (interstate non-excepted, interstate excepted, or intrastate) and must provide the medical certificate to the state licensing agency.

  • The medical examiner must be recertified and listed on the National Registry; an examination by a non-listed provider is not valid for CDL purposes.

  • Vision standards require at least 20/40 corrected in each eye and a field of vision of at least 70 degrees in the horizontal meridian.

  • Hearing standards require the driver to perceive a forced whisper at not less than 5 feet, with or without a hearing aid, or to meet an equivalent audiometric standard.

  • A driver who fails to maintain a valid medical certificate is placed out of service and may not operate a CMV until a valid certificate is provided to the state.

Quick reference

Drug and Alcohol Clearinghouse Requirements

  • The FMCSA Drug and Alcohol Clearinghouse is a database that records drug and alcohol program violations for CDL drivers; employers, drivers, and medical review officers use it.

  • A pre-employment query of the Clearinghouse is required before an employer may hire a CDL driver, and the driver must consent to the query.

  • An annual query of the Clearinghouse is required for all employed CDL drivers, conducted as a limited query with the driver's consent on file.

  • A driver with a prohibited status (refusal to test, positive test, or actual knowledge) may not perform safety-sensitive functions until completing the return-to-duty process with a substance abuse professional.

  • A driver must be registered in the Clearinghouse to respond to employer queries and to view their own record; registration is separate from the CDL itself.

  • Employers must report violations, including positive test results, refusals, and actual knowledge, to the Clearinghouse within three business days.

  • A driver may request a correction of Clearinghouse information and may designate a substance abuse professional or other representative to access the record.

  • The Clearinghouse final rule requires reporting of violations for all CDL drivers, including those operating in excepted interstate and intrastate commerce.

Quick reference

Hazardous Materials Endorsement (H) Knowledge Requirements

  • An H endorsement is required to drive a CMV transporting placarded quantities of hazardous materials, and it is added to a Class A, B, or C CDL; it cannot stand alone.

  • The hazmat knowledge test is a separate written test from the general CDL tests; passing it requires a score of at least 80 percent, and it must be retaken at each renewal.

  • The hazardous materials table (49 CFR 172.101) assigns each material its hazard class, UN/NA identification number, packing group, label codes, and required placards.

  • Placards are required for 1,001 pounds or more aggregate gross weight of a single hazard class, for any quantity of a Table 2 material in the placarding table, and for bulk packages.

  • Class 1 explosives are divided into six compatibility groups for mixed loading; Division 1.1 through 1.3 generally may not be loaded with detonators or with Division 1.5.

  • Shipping papers must accompany the shipment, be within the driver's reach while seated, and be kept in a pouch on the driver's door or in clear view when the driver leaves the cab.

  • A hazardous materials endorsement holder must report to the employer any suspension, revocation, or cancellation of the endorsement, and must not operate a CMV hauling hazmat without a valid endorsement.

  • The security threat assessment (STA) required for the H endorsement is conducted by TSA; a disqualifying criminal history or a finding of not being a lawful permanent resident results in denial.

  • Rail crossings, tunnels, and populated areas may restrict hazmat routes; the driver must follow designated routes and stop requirements and may not smoke or carry a firearm while operating a placarded vehicle.

Quick reference

Entry-Level Driver Training (ELDT) for the Hazardous Materials Endorsement

  • ELDT for the H endorsement is required before the applicant may take the state hazmat knowledge test; training must be completed by a registered training provider.

  • The H endorsement curriculum covers basic introductory hazmat content, operational requirements, and reporting and recordkeeping, plus a security awareness module.

  • The training provider must be listed on the FMCSA Training Provider Registry, and the provider submits the driver's completion record electronically to the registry.

  • The H endorsement theory curriculum requires a minimum of 20 total clock hours of instruction across the three required units.

  • ELDT completion for the H endorsement does not expire for purposes of taking the knowledge test, but the endorsement itself must be renewed and the knowledge test retaken at renewal.

  • A driver who already holds the H endorsement and is only renewing or transferring it is not required to repeat ELDT, but must still pass the knowledge test and the TSA security threat assessment.

  • ELDT is required for the H, N, P, and S endorsements and for the Class A and Class B CDL, but not for the Class C CDL or for the M endorsement.

  • The training provider must assess the driver's knowledge before certifying completion; self-certification by the driver alone is not sufficient.

Quick reference

Medical Examiner Certification Requirements for CDL Holders

  • A CDL holder must be examined by a medical examiner listed on the FMCSA National Registry of Certified Medical Examiners and must carry a valid Medical Examiner's Certificate.

  • The medical examiner completes the MCSA-5875 (Medical Examination Report) and issues the MCSA-5876 (Medical Examiner's Certificate) with an expiration date not to exceed 24 months.

  • A driver with a medical variance (such as a vision or insulin-treated diabetes exemption) must carry the exemption document with the Medical Examiner's Certificate.

  • The driver self-certifies the type of operation (interstate non-excepted, interstate excepted, or intrastate) and must provide the medical certificate to the state licensing agency.

  • The medical examiner must be recertified and listed on the National Registry; an examination by a non-listed provider is not valid for CDL purposes.

  • Vision standards require at least 20/40 corrected in each eye and a field of vision of at least 70 degrees in the horizontal meridian.

  • Hearing standards require the driver to perceive a forced whisper at not less than 5 feet, with or without a hearing aid, or to meet an equivalent audiometric standard.

  • A driver who fails to maintain a valid medical certificate is placed out of service and may not operate a CMV until a valid certificate is provided to the state.

Quick reference

Drug and Alcohol Clearinghouse Requirements

  • The FMCSA Drug and Alcohol Clearinghouse is a database that records drug and alcohol program violations for CDL drivers; employers, drivers, and medical review officers use it.

  • A pre-employment query of the Clearinghouse is required before an employer may hire a CDL driver, and the driver must consent to the query.

  • An annual query of the Clearinghouse is required for all employed CDL drivers, conducted as a limited query with the driver's consent on file.

  • A driver with a prohibited status (refusal to test, positive test, or actual knowledge) may not perform safety-sensitive functions until completing the return-to-duty process with a substance abuse professional.

  • A driver must be registered in the Clearinghouse to respond to employer queries and to view their own record; registration is separate from the CDL itself.

  • Employers must report violations, including positive test results, refusals, and actual knowledge, to the Clearinghouse within three business days.

  • A driver may request a correction of Clearinghouse information and may designate a substance abuse professional or other representative to access the record.

  • The Clearinghouse final rule requires reporting of violations for all CDL drivers, including those operating in excepted interstate and intrastate commerce.

Quick reference

Hazardous Materials Endorsement (H) Knowledge Requirements

  • An H endorsement is required to drive a CMV transporting placarded quantities of hazardous materials, and it is added to a Class A, B, or C CDL; it cannot stand alone.

  • The hazmat knowledge test is a separate written test from the general CDL tests; passing it requires a score of at least 80 percent, and it must be retaken at each renewal.

  • The hazardous materials table (49 CFR 172.101) assigns each material its hazard class, UN/NA identification number, packing group, label codes, and required placards.

  • Placards are required for 1,001 pounds or more aggregate gross weight of a single hazard class, for any quantity of a Table 2 material in the placarding table, and for bulk packages.

  • Class 1 explosives are divided into six compatibility groups for mixed loading; Division 1.1 through 1.3 generally may not be loaded with detonators or with Division 1.5.

  • Shipping papers must accompany the shipment, be within the driver's reach while seated, and be kept in a pouch on the driver's door or in clear view when the driver leaves the cab.

  • A hazardous materials endorsement holder must report to the employer any suspension, revocation, or cancellation of the endorsement, and must not operate a CMV hauling hazmat without a valid endorsement.

  • The security threat assessment (STA) required for the H endorsement is conducted by TSA; a disqualifying criminal history or a finding of not being a lawful permanent resident results in denial.

  • Rail crossings, tunnels, and populated areas may restrict hazmat routes; the driver must follow designated routes and stop requirements and may not smoke or carry a firearm while operating a placarded vehicle.

Quick reference

Entry-Level Driver Training (ELDT) for the Hazardous Materials Endorsement

  • ELDT for the H endorsement is required before the applicant may take the state hazmat knowledge test; training must be completed by a registered training provider.

  • The H endorsement curriculum covers basic introductory hazmat content, operational requirements, and reporting and recordkeeping, plus a security awareness module.

  • The training provider must be listed on the FMCSA Training Provider Registry, and the provider submits the driver's completion record electronically to the registry.

  • The H endorsement theory curriculum requires a minimum of 20 total clock hours of instruction across the three required units.

  • ELDT completion for the H endorsement does not expire for purposes of taking the knowledge test, but the endorsement itself must be renewed and the knowledge test retaken at renewal.

  • A driver who already holds the H endorsement and is only renewing or transferring it is not required to repeat ELDT, but must still pass the knowledge test and the TSA security threat assessment.

  • ELDT is required for the H, N, P, and S endorsements and for the Class A and Class B CDL, but not for the Class C CDL or for the M endorsement.

  • The training provider must assess the driver's knowledge before certifying completion; self-certification by the driver alone is not sufficient.

Quick reference

Medical Examiner Certification Requirements for CDL Holders

  • A CDL holder must be examined by a medical examiner listed on the FMCSA National Registry of Certified Medical Examiners and must carry a valid Medical Examiner's Certificate.

  • The medical examiner completes the MCSA-5875 (Medical Examination Report) and issues the MCSA-5876 (Medical Examiner's Certificate) with an expiration date not to exceed 24 months.

  • A driver with a medical variance (such as a vision or insulin-treated diabetes exemption) must carry the exemption document with the Medical Examiner's Certificate.

  • The driver self-certifies the type of operation (interstate non-excepted, interstate excepted, or intrastate) and must provide the medical certificate to the state licensing agency.

  • The medical examiner must be recertified and listed on the National Registry; an examination by a non-listed provider is not valid for CDL purposes.

  • Vision standards require at least 20/40 corrected in each eye and a field of vision of at least 70 degrees in the horizontal meridian.

  • Hearing standards require the driver to perceive a forced whisper at not less than 5 feet, with or without a hearing aid, or to meet an equivalent audiometric standard.

  • A driver who fails to maintain a valid medical certificate is placed out of service and may not operate a CMV until a valid certificate is provided to the state.

Quick reference

Drug and Alcohol Clearinghouse Requirements

  • The FMCSA Drug and Alcohol Clearinghouse is a database that records drug and alcohol program violations for CDL drivers; employers, drivers, and medical review officers use it.

  • A pre-employment query of the Clearinghouse is required before an employer may hire a CDL driver, and the driver must consent to the query.

  • An annual query of the Clearinghouse is required for all employed CDL drivers, conducted as a limited query with the driver's consent on file.

  • A driver with a prohibited status (refusal to test, positive test, or actual knowledge) may not perform safety-sensitive functions until completing the return-to-duty process with a substance abuse professional.

  • A driver must be registered in the Clearinghouse to respond to employer queries and to view their own record; registration is separate from the CDL itself.

  • Employers must report violations, including positive test results, refusals, and actual knowledge, to the Clearinghouse within three business days.

  • A driver may request a correction of Clearinghouse information and may designate a substance abuse professional or other representative to access the record.

  • The Clearinghouse final rule requires reporting of violations for all CDL drivers, including those operating in excepted interstate and intrastate commerce.

Quick reference

Hazardous Materials Endorsement (H) Knowledge Requirements

  • An H endorsement is required to drive a CMV transporting placarded quantities of hazardous materials, and it is added to a Class A, B, or C CDL; it cannot stand alone.

  • The hazmat knowledge test is a separate written test from the general CDL tests; passing it requires a score of at least 80 percent, and it must be retaken at each renewal.

  • The hazardous materials table (49 CFR 172.101) assigns each material its hazard class, UN/NA identification number, packing group, label codes, and required placards.

  • Placards are required for 1,001 pounds or more aggregate gross weight of a single hazard class, for any quantity of a Table 2 material in the placarding table, and for bulk packages.

  • Class 1 explosives are divided into six compatibility groups for mixed loading; Division 1.1 through 1.3 generally may not be loaded with detonators or with Division 1.5.

  • Shipping papers must accompany the shipment, be within the driver's reach while seated, and be kept in a pouch on the driver's door or in clear view when the driver leaves the cab.

  • A hazardous materials endorsement holder must report to the employer any suspension, revocation, or cancellation of the endorsement, and must not operate a CMV hauling hazmat without a valid endorsement.

  • The security threat assessment (STA) required for the H endorsement is conducted by TSA; a disqualifying criminal history or a finding of not being a lawful permanent resident results in denial.

  • Rail crossings, tunnels, and populated areas may restrict hazmat routes; the driver must follow designated routes and stop requirements and may not smoke or carry a firearm while operating a placarded vehicle.

Quick reference

Entry-Level Driver Training (ELDT) for the Hazardous Materials Endorsement

  • ELDT for the H endorsement is required before the applicant may take the state hazmat knowledge test; training must be completed by a registered training provider.

  • The H endorsement curriculum covers basic introductory hazmat content, operational requirements, and reporting and recordkeeping, plus a security awareness module.

  • The training provider must be listed on the FMCSA Training Provider Registry, and the provider submits the driver's completion record electronically to the registry.

  • The H endorsement theory curriculum requires a minimum of 20 total clock hours of instruction across the three required units.

  • ELDT completion for the H endorsement does not expire for purposes of taking the knowledge test, but the endorsement itself must be renewed and the knowledge test retaken at renewal.

  • A driver who already holds the H endorsement and is only renewing or transferring it is not required to repeat ELDT, but must still pass the knowledge test and the TSA security threat assessment.

  • ELDT is required for the H, N, P, and S endorsements and for the Class A and Class B CDL, but not for the Class C CDL or for the M endorsement.

  • The training provider must assess the driver's knowledge before certifying completion; self-certification by the driver alone is not sufficient.

Quick reference

Medical Examiner Certification Requirements for CDL Holders

  • A CDL holder must be examined by a medical examiner listed on the FMCSA National Registry of Certified Medical Examiners and must carry a valid Medical Examiner's Certificate.

  • The medical examiner completes the MCSA-5875 (Medical Examination Report) and issues the MCSA-5876 (Medical Examiner's Certificate) with an expiration date not to exceed 24 months.

  • A driver with a medical variance (such as a vision or insulin-treated diabetes exemption) must carry the exemption document with the Medical Examiner's Certificate.

  • The driver self-certifies the type of operation (interstate non-excepted, interstate excepted, or intrastate) and must provide the medical certificate to the state licensing agency.

  • The medical examiner must be recertified and listed on the National Registry; an examination by a non-listed provider is not valid for CDL purposes.

  • Vision standards require at least 20/40 corrected in each eye and a field of vision of at least 70 degrees in the horizontal meridian.

  • Hearing standards require the driver to perceive a forced whisper at not less than 5 feet, with or without a hearing aid, or to meet an equivalent audiometric standard.

  • A driver who fails to maintain a valid medical certificate is placed out of service and may not operate a CMV until a valid certificate is provided to the state.

Quick reference

Drug and Alcohol Clearinghouse Requirements

  • The FMCSA Drug and Alcohol Clearinghouse is a database that records drug and alcohol program violations for CDL drivers; employers, drivers, and medical review officers use it.

  • A pre-employment query of the Clearinghouse is required before an employer may hire a CDL driver, and the driver must consent to the query.

  • An annual query of the Clearinghouse is required for all employed CDL drivers, conducted as a limited query with the driver's consent on file.

  • A driver with a prohibited status (refusal to test, positive test, or actual knowledge) may not perform safety-sensitive functions until completing the return-to-duty process with a substance abuse professional.

  • A driver must be registered in the Clearinghouse to respond to employer queries and to view their own record; registration is separate from the CDL itself.

  • Employers must report violations, including positive test results, refusals, and actual knowledge, to the Clearinghouse within three business days.

  • A driver may request a correction of Clearinghouse information and may designate a substance abuse professional or other representative to access the record.

  • The Clearinghouse final rule requires reporting of violations for all CDL drivers, including those operating in excepted interstate and intrastate commerce.

Quick reference

Hazardous Materials Endorsement (H) Knowledge Requirements

  • An H endorsement is required to drive a CMV transporting placarded quantities of hazardous materials, and it is added to a Class A, B, or C CDL; it cannot stand alone.

  • The hazmat knowledge test is a separate written test from the general CDL tests; passing it requires a score of at least 80 percent, and it must be retaken at each renewal.

  • The hazardous materials table (49 CFR 172.101) assigns each material its hazard class, UN/NA identification number, packing group, label codes, and required placards.

  • Placards are required for 1,001 pounds or more aggregate gross weight of a single hazard class, for any quantity of a Table 2 material in the placarding table, and for bulk packages.

  • Class 1 explosives are divided into six compatibility groups for mixed loading; Division 1.1 through 1.3 generally may not be loaded with detonators or with Division 1.5.

  • Shipping papers must accompany the shipment, be within the driver's reach while seated, and be kept in a pouch on the driver's door or in clear view when the driver leaves the cab.

  • A hazardous materials endorsement holder must report to the employer any suspension, revocation, or cancellation of the endorsement, and must not operate a CMV hauling hazmat without a valid endorsement.

  • The security threat assessment (STA) required for the H endorsement is conducted by TSA; a disqualifying criminal history or a finding of not being a lawful permanent resident results in denial.

  • Rail crossings, tunnels, and populated areas may restrict hazmat routes; the driver must follow designated routes and stop requirements and may not smoke or carry a firearm while operating a placarded vehicle.

Quick reference

Entry-Level Driver Training (ELDT) for the Hazardous Materials Endorsement

  • ELDT for the H endorsement is required before the applicant may take the state hazmat knowledge test; training must be completed by a registered training provider.

  • The H endorsement curriculum covers basic introductory hazmat content, operational requirements, and reporting and recordkeeping, plus a security awareness module.

  • The training provider must be listed on the FMCSA Training Provider Registry, and the provider submits the driver's completion record electronically to the registry.

  • The H endorsement theory curriculum requires a minimum of 20 total clock hours of instruction across the three required units.

  • ELDT completion for the H endorsement does not expire for purposes of taking the knowledge test, but the endorsement itself must be renewed and the knowledge test retaken at renewal.

  • A driver who already holds the H endorsement and is only renewing or transferring it is not required to repeat ELDT, but must still pass the knowledge test and the TSA security threat assessment.

  • ELDT is required for the H, N, P, and S endorsements and for the Class A and Class B CDL, but not for the Class C CDL or for the M endorsement.

  • The training provider must assess the driver's knowledge before certifying completion; self-certification by the driver alone is not sufficient.

Quick reference

Medical Examiner Certification Requirements for CDL Holders

  • A CDL holder must be examined by a medical examiner listed on the FMCSA National Registry of Certified Medical Examiners and must carry a valid Medical Examiner's Certificate.

  • The medical examiner completes the MCSA-5875 (Medical Examination Report) and issues the MCSA-5876 (Medical Examiner's Certificate) with an expiration date not to exceed 24 months.

  • A driver with a medical variance (such as a vision or insulin-treated diabetes exemption) must carry the exemption document with the Medical Examiner's Certificate.

  • The driver self-certifies the type of operation (interstate non-excepted, interstate excepted, or intrastate) and must provide the medical certificate to the state licensing agency.

  • The medical examiner must be recertified and listed on the National Registry; an examination by a non-listed provider is not valid for CDL purposes.

  • Vision standards require at least 20/40 corrected in each eye and a field of vision of at least 70 degrees in the horizontal meridian.

  • Hearing standards require the driver to perceive a forced whisper at not less than 5 feet, with or without a hearing aid, or to meet an equivalent audiometric standard.

  • A driver who fails to maintain a valid medical certificate is placed out of service and may not operate a CMV until a valid certificate is provided to the state.

Quick reference

Drug and Alcohol Clearinghouse Requirements

  • The FMCSA Drug and Alcohol Clearinghouse is a database that records drug and alcohol program violations for CDL drivers; employers, drivers, and medical review officers use it.

  • A pre-employment query of the Clearinghouse is required before an employer may hire a CDL driver, and the driver must consent to the query.

  • An annual query of the Clearinghouse is required for all employed CDL drivers, conducted as a limited query with the driver's consent on file.

  • A driver with a prohibited status (refusal to test, positive test, or actual knowledge) may not perform safety-sensitive functions until completing the return-to-duty process with a substance abuse professional.

  • A driver must be registered in the Clearinghouse to respond to employer queries and to view their own record; registration is separate from the CDL itself.

  • Employers must report violations, including positive test results, refusals, and actual knowledge, to the Clearinghouse within three business days.

  • A driver may request a correction of Clearinghouse information and may designate a substance abuse professional or other representative to access the record.

  • The Clearinghouse final rule requires reporting of violations for all CDL drivers, including those operating in excepted interstate and intrastate commerce.

Quick reference

Hazardous Materials Endorsement (H) Knowledge Requirements

  • An H endorsement is required to drive a CMV transporting placarded quantities of hazardous materials, and it is added to a Class A, B, or C CDL; it cannot stand alone.

  • The hazmat knowledge test is a separate written test from the general CDL tests; passing it requires a score of at least 80 percent, and it must be retaken at each renewal.

  • The hazardous materials table (49 CFR 172.101) assigns each material its hazard class, UN/NA identification number, packing group, label codes, and required placards.

  • Placards are required for 1,001 pounds or more aggregate gross weight of a single hazard class, for any quantity of a Table 2 material in the placarding table, and for bulk packages.

  • Class 1 explosives are divided into six compatibility groups for mixed loading; Division 1.1 through 1.3 generally may not be loaded with detonators or with Division 1.5.

  • Shipping papers must accompany the shipment, be within the driver's reach while seated, and be kept in a pouch on the driver's door or in clear view when the driver leaves the cab.

  • A hazardous materials endorsement holder must report to the employer any suspension, revocation, or cancellation of the endorsement, and must not operate a CMV hauling hazmat without a valid endorsement.

  • The security threat assessment (STA) required for the H endorsement is conducted by TSA; a disqualifying criminal history or a finding of not being a lawful permanent resident results in denial.

  • Rail crossings, tunnels, and populated areas may restrict hazmat routes; the driver must follow designated routes and stop requirements and may not smoke or carry a firearm while operating a placarded vehicle.

Quick reference

Entry-Level Driver Training (ELDT) for the Hazardous Materials Endorsement

  • ELDT for the H endorsement is required before the applicant may take the state hazmat knowledge test; training must be completed by a registered training provider.

  • The H endorsement curriculum covers basic introductory hazmat content, operational requirements, and reporting and recordkeeping, plus a security awareness module.

  • The training provider must be listed on the FMCSA Training Provider Registry, and the provider submits the driver's completion record electronically to the registry.

  • The H endorsement theory curriculum requires a minimum of 20 total clock hours of instruction across the three required units.

  • ELDT completion for the H endorsement does not expire for purposes of taking the knowledge test, but the endorsement itself must be renewed and the knowledge test retaken at renewal.

  • A driver who already holds the H endorsement and is only renewing or transferring it is not required to repeat ELDT, but must still pass the knowledge test and the TSA security threat assessment.

  • ELDT is required for the H, N, P, and S endorsements and for the Class A and Class B CDL, but not for the Class C CDL or for the M endorsement.

  • The training provider must assess the driver's knowledge before certifying completion; self-certification by the driver alone is not sufficient.

Quick reference

Medical Examiner Certification Requirements for CDL Holders

  • A CDL holder must be examined by a medical examiner listed on the FMCSA National Registry of Certified Medical Examiners and must carry a valid Medical Examiner's Certificate.

  • The medical examiner completes the MCSA-5875 (Medical Examination Report) and issues the MCSA-5876 (Medical Examiner's Certificate) with an expiration date not to exceed 24 months.

  • A driver with a medical variance (such as a vision or insulin-treated diabetes exemption) must carry the exemption document with the Medical Examiner's Certificate.

  • The driver self-certifies the type of operation (interstate non-excepted, interstate excepted, or intrastate) and must provide the medical certificate to the state licensing agency.

  • The medical examiner must be recertified and listed on the National Registry; an examination by a non-listed provider is not valid for CDL purposes.

  • Vision standards require at least 20/40 corrected in each eye and a field of vision of at least 70 degrees in the horizontal meridian.

  • Hearing standards require the driver to perceive a forced whisper at not less than 5 feet, with or without a hearing aid, or to meet an equivalent audiometric standard.

  • A driver who fails to maintain a valid medical certificate is placed out of service and may not operate a CMV until a valid certificate is provided to the state.

Quick reference

Drug and Alcohol Clearinghouse Requirements

  • The FMCSA Drug and Alcohol Clearinghouse is a database that records drug and alcohol program violations for CDL drivers; employers, drivers, and medical review officers use it.

  • A pre-employment query of the Clearinghouse is required before an employer may hire a CDL driver, and the driver must consent to the query.

  • An annual query of the Clearinghouse is required for all employed CDL drivers, conducted as a limited query with the driver's consent on file.

  • A driver with a prohibited status (refusal to test, positive test, or actual knowledge) may not perform safety-sensitive functions until completing the return-to-duty process with a substance abuse professional.

  • A driver must be registered in the Clearinghouse to respond to employer queries and to view their own record; registration is separate from the CDL itself.

  • Employers must report violations, including positive test results, refusals, and actual knowledge, to the Clearinghouse within three business days.

  • A driver may request a correction of Clearinghouse information and may designate a substance abuse professional or other representative to access the record.

  • The Clearinghouse final rule requires reporting of violations for all CDL drivers, including those operating in excepted interstate and intrastate commerce.

Quick reference

Hazardous Materials Endorsement (H) Knowledge Requirements

  • An H endorsement is required to drive a CMV transporting placarded quantities of hazardous materials, and it is added to a Class A, B, or C CDL; it cannot stand alone.

  • The hazmat knowledge test is a separate written test from the general CDL tests; passing it requires a score of at least 80 percent, and it must be retaken at each renewal.

  • The hazardous materials table (49 CFR 172.101) assigns each material its hazard class, UN/NA identification number, packing group, label codes, and required placards.

  • Placards are required for 1,001 pounds or more aggregate gross weight of a single hazard class, for any quantity of a Table 2 material in the placarding table, and for bulk packages.

  • Class 1 explosives are divided into six compatibility groups for mixed loading; Division 1.1 through 1.3 generally may not be loaded with detonators or with Division 1.5.

  • Shipping papers must accompany the shipment, be within the driver's reach while seated, and be kept in a pouch on the driver's door or in clear view when the driver leaves the cab.

  • A hazardous materials endorsement holder must report to the employer any suspension, revocation, or cancellation of the endorsement, and must not operate a CMV hauling hazmat without a valid endorsement.

  • The security threat assessment (STA) required for the H endorsement is conducted by TSA; a disqualifying criminal history or a finding of not being a lawful permanent resident results in denial.

  • Rail crossings, tunnels, and populated areas may restrict hazmat routes; the driver must follow designated routes and stop requirements and may not smoke or carry a firearm while operating a placarded vehicle.

Quick reference

Entry-Level Driver Training (ELDT) for the Hazardous Materials Endorsement

  • ELDT for the H endorsement is required before the applicant may take the state hazmat knowledge test; training must be completed by a registered training provider.

  • The H endorsement curriculum covers basic introductory hazmat content, operational requirements, and reporting and recordkeeping, plus a security awareness module.

  • The training provider must be listed on the FMCSA Training Provider Registry, and the provider submits the driver's completion record electronically to the registry.

  • The H endorsement theory curriculum requires a minimum of 20 total clock hours of instruction across the three required units.

  • ELDT completion for the H endorsement does not expire for purposes of taking the knowledge test, but the endorsement itself must be renewed and the knowledge test retaken at renewal.

  • A driver who already holds the H endorsement and is only renewing or transferring it is not required to repeat ELDT, but must still pass the knowledge test and the TSA security threat assessment.

  • ELDT is required for the H, N, P, and S endorsements and for the Class A and Class B CDL, but not for the Class C CDL or for the M endorsement.

  • The training provider must assess the driver's knowledge before certifying completion; self-certification by the driver alone is not sufficient.

Quick reference

Medical Examiner Certification Requirements for CDL Holders

  • A CDL holder must be examined by a medical examiner listed on the FMCSA National Registry of Certified Medical Examiners and must carry a valid Medical Examiner's Certificate.

  • The medical examiner completes the MCSA-5875 (Medical Examination Report) and issues the MCSA-5876 (Medical Examiner's Certificate) with an expiration date not to exceed 24 months.

  • A driver with a medical variance (such as a vision or insulin-treated diabetes exemption) must carry the exemption document with the Medical Examiner's Certificate.

  • The driver self-certifies the type of operation (interstate non-excepted, interstate excepted, or intrastate) and must provide the medical certificate to the state licensing agency.

  • The medical examiner must be recertified and listed on the National Registry; an examination by a non-listed provider is not valid for CDL purposes.

  • Vision standards require at least 20/40 corrected in each eye and a field of vision of at least 70 degrees in the horizontal meridian.

  • Hearing standards require the driver to perceive a forced whisper at not less than 5 feet, with or without a hearing aid, or to meet an equivalent audiometric standard.

  • A driver who fails to maintain a valid medical certificate is placed out of service and may not operate a CMV until a valid certificate is provided to the state.

Quick reference

Drug and Alcohol Clearinghouse Requirements

  • The FMCSA Drug and Alcohol Clearinghouse is a database that records drug and alcohol program violations for CDL drivers; employers, drivers, and medical review officers use it.

  • A pre-employment query of the Clearinghouse is required before an employer may hire a CDL driver, and the driver must consent to the query.

  • An annual query of the Clearinghouse is required for all employed CDL drivers, conducted as a limited query with the driver's consent on file.

  • A driver with a prohibited status (refusal to test, positive test, or actual knowledge) may not perform safety-sensitive functions until completing the return-to-duty process with a substance abuse professional.

  • A driver must be registered in the Clearinghouse to respond to employer queries and to view their own record; registration is separate from the CDL itself.

  • Employers must report violations, including positive test results, refusals, and actual knowledge, to the Clearinghouse within three business days.

  • A driver may request a correction of Clearinghouse information and may designate a substance abuse professional or other representative to access the record.

  • The Clearinghouse final rule requires reporting of violations for all CDL drivers, including those operating in excepted interstate and intrastate commerce.

Quick reference

Hazardous Materials Endorsement (H) Knowledge Requirements

  • An H endorsement is required to drive a CMV transporting placarded quantities of hazardous materials, and it is added to a Class A, B, or C CDL; it cannot stand alone.

  • The hazmat knowledge test is a separate written test from the general CDL tests; passing it requires a score of at least 80 percent, and it must be retaken at each renewal.

  • The hazardous materials table (49 CFR 172.101) assigns each material its hazard class, UN/NA identification number, packing group, label codes, and required placards.

  • Placards are required for 1,001 pounds or more aggregate gross weight of a single hazard class, for any quantity of a Table 2 material in the placarding table, and for bulk packages.

  • Class 1 explosives are divided into six compatibility groups for mixed loading; Division 1.1 through 1.3 generally may not be loaded with detonators or with Division 1.5.

  • Shipping papers must accompany the shipment, be within the driver's reach while seated, and be kept in a pouch on the driver's door or in clear view when the driver leaves the cab.

  • A hazardous materials endorsement holder must report to the employer any suspension, revocation, or cancellation of the endorsement, and must not operate a CMV hauling hazmat without a valid endorsement.

  • The security threat assessment (STA) required for the H endorsement is conducted by TSA; a disqualifying criminal history or a finding of not being a lawful permanent resident results in denial.

  • Rail crossings, tunnels, and populated areas may restrict hazmat routes; the driver must follow designated routes and stop requirements and may not smoke or carry a firearm while operating a placarded vehicle.

Quick reference

Entry-Level Driver Training (ELDT) for the Hazardous Materials Endorsement

  • ELDT for the H endorsement is required before the applicant may take the state hazmat knowledge test; training must be completed by a registered training provider.

  • The H endorsement curriculum covers basic introductory hazmat content, operational requirements, and reporting and recordkeeping, plus a security awareness module.

  • The training provider must be listed on the FMCSA Training Provider Registry, and the provider submits the driver's completion record electronically to the registry.

  • The H endorsement theory curriculum requires a minimum of 20 total clock hours of instruction across the three required units.

  • ELDT completion for the H endorsement does not expire for purposes of taking the knowledge test, but the endorsement itself must be renewed and the knowledge test retaken at renewal.

  • A driver who already holds the H endorsement and is only renewing or transferring it is not required to repeat ELDT, but must still pass the knowledge test and the TSA security threat assessment.

  • ELDT is required for the H, N, P, and S endorsements and for the Class A and Class B CDL, but not for the Class C CDL or for the M endorsement.

  • The training provider must assess the driver's knowledge before certifying completion; self-certification by the driver alone is not sufficient.

Quick reference

Medical Examiner Certification Requirements for CDL Holders

  • A CDL holder must be examined by a medical examiner listed on the FMCSA National Registry of Certified Medical Examiners and must carry a valid Medical Examiner's Certificate.

  • The medical examiner completes the MCSA-5875 (Medical Examination Report) and issues the MCSA-5876 (Medical Examiner's Certificate) with an expiration date not to exceed 24 months.

  • A driver with a medical variance (such as a vision or insulin-treated diabetes exemption) must carry the exemption document with the Medical Examiner's Certificate.

  • The driver self-certifies the type of operation (interstate non-excepted, interstate excepted, or intrastate) and must provide the medical certificate to the state licensing agency.

  • The medical examiner must be recertified and listed on the National Registry; an examination by a non-listed provider is not valid for CDL purposes.

  • Vision standards require at least 20/40 corrected in each eye and a field of vision of at least 70 degrees in the horizontal meridian.

  • Hearing standards require the driver to perceive a forced whisper at not less than 5 feet, with or without a hearing aid, or to meet an equivalent audiometric standard.

  • A driver who fails to maintain a valid medical certificate is placed out of service and may not operate a CMV until a valid certificate is provided to the state.

Quick reference

Drug and Alcohol Clearinghouse Requirements

  • The FMCSA Drug and Alcohol Clearinghouse is a database that records drug and alcohol program violations for CDL drivers; employers, drivers, and medical review officers use it.

  • A pre-employment query of the Clearinghouse is required before an employer may hire a CDL driver, and the driver must consent to the query.

  • An annual query of the Clearinghouse is required for all employed CDL drivers, conducted as a limited query with the driver's consent on file.

  • A driver with a prohibited status (refusal to test, positive test, or actual knowledge) may not perform safety-sensitive functions until completing the return-to-duty process with a substance abuse professional.

  • A driver must be registered in the Clearinghouse to respond to employer queries and to view their own record; registration is separate from the CDL itself.

  • Employers must report violations, including positive test results, refusals, and actual knowledge, to the Clearinghouse within three business days.

  • A driver may request a correction of Clearinghouse information and may designate a substance abuse professional or other representative to access the record.

  • The Clearinghouse final rule requires reporting of violations for all CDL drivers, including those operating in excepted interstate and intrastate commerce.