Louisiana CDL Hazmat cheat sheet

Hazmat endorsement requires a TSA security threat assessment, a knowledge test, and a clean driving record; the endorsement must be renewed with the license, and hazmat drivers are subject to a five-year background check cycle.

Placards are required for 1,001 lb or more aggregate gross weight of a Table 2 material, any quantity of a Table 1 material, and any quantity of a hazardous material listed in the placarding tables for the specific hazard class.

The shipping paper must contain the basic description in order: UN/NA identification number, proper shipping name, hazard class/division, and packing group (for example, UN1203, Gasoline, 3, PG II).

Emergency response information must accompany the shipping paper and include the nature of the hazard, fire/explosion risks, immediate first aid, and initial spill response; a DOT ERG guide number or a 24-hour emergency response telephone number satisfies the requirement.

A hazmat incident must be reported immediately by telephone to the National Response Center (1-800-424-8802) when there is a death, injury requiring hospitalization, property damage of $50,000 or more, evacuation, or a discharge of a hazardous material meeting the reportable quantity.

A written incident report on DOT Form 5800.1 must be submitted within 30 days of the incident, and a follow-up report is required if the incident involves a death, injury, or continuing hazard.

The Emergency Response Guidebook (ERG) is organized by guide numbers (yellow-bordered pages list UN/NA numbers, blue-bordered pages list chemical names, orange-bordered pages contain the guides); the green-bordered pages list initial isolation and protective action distances for toxic inhalation hazards.

Shipping papers must be within the driver's reach while driving, kept in a pouch on the driver's door, or in a holder mounted in clear view; when the driver leaves the vehicle, the papers must be left on the driver's seat or in the door pouch.

A hazardous material is any substance capable of posing an unreasonable risk to health, safety, and property when transported in commerce; the nine hazard classes run from Class 1 (explosives) through Class 9 (miscellaneous), with Class 7 radioactive and Class 6 toxic materials carrying special communication rules.

Cargo must be secured against shifting by blocking and bracing, tiedowns, or shoring; a hazmat load that can shift is a violation regardless of whether the material itself is packaged correctly.

Cyanides and acids must never be loaded together, and oxidizing materials must be kept away from flammable materials and organic peroxides; the segregation table in 49 CFR 177.848 governs which hazard classes may not be loaded together.

Packages bearing the POISON or POISON INHALATION HAZARD label must be loaded so that they are accessible and, when the vehicle is parked, so that the packages are not exposed to damage from other cargo.

Cylinders of compressed gas must be loaded upright, secured to prevent tipping, and kept away from heat sources; valves must be protected with caps or guards during transport.

Before loading, inspect each package for leaks, stains, odors, or damaged closures; a leaking package must not be loaded and must be reported to the shipper.

When loading or unloading, the engine must be shut off, brakes set, and wheels chocked; the driver must stay with the vehicle when the cargo is hazardous and the vehicle is on a public road.

Hazardous materials must be loaded so that the placards and labels remain visible and the shipping papers are not buried; the driver must be able to identify the material in an emergency.

Segregation rules also apply to food and animal feed: no hazardous material may be loaded in the same vehicle with foodstuffs unless the hazmat is packaged and separated to prevent contamination.

The driver must verify that the shipper has provided the correct shipping paper, emergency response information, and placards before accepting a hazmat load; a load with missing or inconsistent paperwork must be refused.

A cargo tank must be inspected and tested at least annually (external visual inspection and leak test) and at least every five years for internal inspection and pressure test, with the test dates stamped on the tank and recorded on the specification plate.

The cargo tank must be marked with the specification plate showing the tank's design pressure, capacity, and the materials it is approved to carry; a tank may only be loaded with a material listed on its specification plate.

Before loading, check that all valves, hatches, and outlets are closed and that the tank's emergency shutoff system is functional; the driver must verify the tank is empty of incompatible residue before loading a new product.

Bulk packages include cargo tanks, portable tanks, tank cars, and hopper cars; a bulk package is one that holds more than 119 gallons (450 liters) of liquid or more than 882 pounds (400 kg) of solid.

The driver must not smoke or use open flame within 25 feet of a cargo tank being loaded or unloaded, and the engine must be shut off during loading and unloading.

When loading flammable liquids, the driver must bond the tank to the loading rack and ground the vehicle to prevent static discharge; the bonding cable must be connected before the loading hose.

Cargo tanks carrying flammable liquids must have a fire extinguisher with a minimum 20 BC rating (or a 10 BC for smaller tanks) and the tank must be equipped with a remote shutoff valve.

The driver must check the cargo tank's internal valves and the emergency discharge control system before unloading; a tank without a functioning emergency shutoff must not be unloaded.

Hazmat vehicles must stop at railroad crossings, look both ways, and proceed only when the track is clear; the stop rule applies to vehicles carrying any quantity of hazardous material requiring placards and to cargo tanks, regardless of the load.

When stopping at a railroad crossing, the driver must stop within 15 to 50 feet of the nearest rail, set the parking brake, and listen before proceeding.

Hazmat vehicles may not be parked within 5 feet of a traveled roadway, and parking is prohibited within 300 feet of a bridge, tunnel, or railroad crossing unless the vehicle is attended.

Vehicles carrying hazardous materials are prohibited from tunnels and underpasses posted with a hazmat restriction; the driver must use an alternate route and must not enter a tunnel marked with a hazmat prohibition.

When parking a hazmat vehicle, the driver must set the parking brake, chock the wheels, and, if the vehicle is unattended, leave the shipping papers in the door pouch and ensure the vehicle is visible to traffic.

Hazmat vehicles must not be driven through a tunnel if the material is a flammable gas or liquid unless the tunnel is specifically approved; the ERG and local signage govern which tunnels are restricted.

The driver must maintain a safe following distance and reduce speed in bad weather; a hazmat vehicle carrying flammable liquids must not exceed the posted speed limit and must slow down for curves and construction zones.

When a hazmat vehicle is stopped by a railroad crossing gate or a train, the driver must not attempt to cross until the gate is fully raised and the track is clear; the vehicle must not stop on the tracks.

In a hazmat emergency, the first priority is to protect people: stop the vehicle, move upwind and uphill, and keep others away from the spill; the driver must not attempt to fight a fire involving hazardous materials.

The driver must call 911 and the National Response Center, then notify the shipper and the carrier; the shipping papers and placards identify the material for responders.

The ERG's initial isolation distances must be applied from the green-bordered pages for toxic inhalation hazards; for other materials, the orange-bordered guide provides the isolation and protective action guidance.

A spill of a flammable liquid must be contained with absorbent material or dirt, and all ignition sources must be eliminated; the driver must not use water on a flammable liquid fire unless the ERG guide specifically permits it.

If a package is leaking, the driver must not handle it without protective equipment; the driver should keep the shipping paper available and inform responders of the material's name and UN number.

The driver must not re-enter the vehicle or attempt to move it if the vehicle is on fire or if the cargo is a toxic inhalation hazard; the driver should move to a safe distance and wait for responders.

After an incident, the driver must complete the written incident report and preserve the shipping papers, placards, and any damaged packaging for investigation.

The ERG's protective action distances are measured from the spill site; the driver must account for wind direction and move people crosswind, not downwind, to avoid exposure.

Placards are required for 1,001 lb or more aggregate gross weight of a Table 2 material, any quantity of a Table 1 material, and any quantity of a hazardous material listed in the placarding tables for the specific hazard class.

The shipping paper must contain the basic description in order: UN/NA identification number, proper shipping name, hazard class/division, and packing group (for example, UN1203, Gasoline, 3, PG II).

Emergency response information must accompany the shipping paper and include the nature of the hazard, fire/explosion risks, immediate first aid, and initial spill response; a DOT ERG guide number or a 24-hour emergency response telephone number satisfies the requirement.

A hazmat incident must be reported immediately by telephone to the National Response Center (1-800-424-8802) when there is a death, injury requiring hospitalization, property damage of $50,000 or more, evacuation, or a discharge of a hazardous material meeting the reportable quantity.

A written incident report on DOT Form 5800.1 must be submitted within 30 days of the incident, and a follow-up report is required if the incident involves a death, injury, or continuing hazard.

The Emergency Response Guidebook (ERG) is organized by guide numbers (yellow-bordered pages list UN/NA numbers, blue-bordered pages list chemical names, orange-bordered pages contain the guides); the green-bordered pages list initial isolation and protective action distances for toxic inhalation hazards.

Shipping papers must be within the driver's reach while driving, kept in a pouch on the driver's door, or in a holder mounted in clear view; when the driver leaves the vehicle, the papers must be left on the driver's seat or in the door pouch.

A hazardous material is any substance capable of posing an unreasonable risk to health, safety, and property when transported in commerce; the nine hazard classes run from Class 1 (explosives) through Class 9 (miscellaneous), with Class 7 radioactive and Class 6 toxic materials carrying special communication rules.

Cargo must be secured against shifting by blocking and bracing, tiedowns, or shoring; a hazmat load that can shift is a violation regardless of whether the material itself is packaged correctly.

Cyanides and acids must never be loaded together, and oxidizing materials must be kept away from flammable materials and organic peroxides; the segregation table in 49 CFR 177.848 governs which hazard classes may not be loaded together.

Packages bearing the POISON or POISON INHALATION HAZARD label must be loaded so that they are accessible and, when the vehicle is parked, so that the packages are not exposed to damage from other cargo.

Cylinders of compressed gas must be loaded upright, secured to prevent tipping, and kept away from heat sources; valves must be protected with caps or guards during transport.

Before loading, inspect each package for leaks, stains, odors, or damaged closures; a leaking package must not be loaded and must be reported to the shipper.

When loading or unloading, the engine must be shut off, brakes set, and wheels chocked; the driver must stay with the vehicle when the cargo is hazardous and the vehicle is on a public road.

Hazardous materials must be loaded so that the placards and labels remain visible and the shipping papers are not buried; the driver must be able to identify the material in an emergency.

Segregation rules also apply to food and animal feed: no hazardous material may be loaded in the same vehicle with foodstuffs unless the hazmat is packaged and separated to prevent contamination.

The driver must verify that the shipper has provided the correct shipping paper, emergency response information, and placards before accepting a hazmat load; a load with missing or inconsistent paperwork must be refused.

A cargo tank must be inspected and tested at least annually (external visual inspection and leak test) and at least every five years for internal inspection and pressure test, with the test dates stamped on the tank and recorded on the specification plate.

The cargo tank must be marked with the specification plate showing the tank's design pressure, capacity, and the materials it is approved to carry; a tank may only be loaded with a material listed on its specification plate.

Before loading, check that all valves, hatches, and outlets are closed and that the tank's emergency shutoff system is functional; the driver must verify the tank is empty of incompatible residue before loading a new product.

Bulk packages include cargo tanks, portable tanks, tank cars, and hopper cars; a bulk package is one that holds more than 119 gallons (450 liters) of liquid or more than 882 pounds (400 kg) of solid.

The driver must not smoke or use open flame within 25 feet of a cargo tank being loaded or unloaded, and the engine must be shut off during loading and unloading.

When loading flammable liquids, the driver must bond the tank to the loading rack and ground the vehicle to prevent static discharge; the bonding cable must be connected before the loading hose.

Cargo tanks carrying flammable liquids must have a fire extinguisher with a minimum 20 BC rating (or a 10 BC for smaller tanks) and the tank must be equipped with a remote shutoff valve.

The driver must check the cargo tank's internal valves and the emergency discharge control system before unloading; a tank without a functioning emergency shutoff must not be unloaded.

Hazmat vehicles must stop at railroad crossings, look both ways, and proceed only when the track is clear; the stop rule applies to vehicles carrying any quantity of hazardous material requiring placards and to cargo tanks, regardless of the load.

When stopping at a railroad crossing, the driver must stop within 15 to 50 feet of the nearest rail, set the parking brake, and listen before proceeding.

Hazmat vehicles may not be parked within 5 feet of a traveled roadway, and parking is prohibited within 300 feet of a bridge, tunnel, or railroad crossing unless the vehicle is attended.

Vehicles carrying hazardous materials are prohibited from tunnels and underpasses posted with a hazmat restriction; the driver must use an alternate route and must not enter a tunnel marked with a hazmat prohibition.

When parking a hazmat vehicle, the driver must set the parking brake, chock the wheels, and, if the vehicle is unattended, leave the shipping papers in the door pouch and ensure the vehicle is visible to traffic.

Hazmat vehicles must not be driven through a tunnel if the material is a flammable gas or liquid unless the tunnel is specifically approved; the ERG and local signage govern which tunnels are restricted.

The driver must maintain a safe following distance and reduce speed in bad weather; a hazmat vehicle carrying flammable liquids must not exceed the posted speed limit and must slow down for curves and construction zones.

When a hazmat vehicle is stopped by a railroad crossing gate or a train, the driver must not attempt to cross until the gate is fully raised and the track is clear; the vehicle must not stop on the tracks.

In a hazmat emergency, the first priority is to protect people: stop the vehicle, move upwind and uphill, and keep others away from the spill; the driver must not attempt to fight a fire involving hazardous materials.

The driver must call 911 and the National Response Center, then notify the shipper and the carrier; the shipping papers and placards identify the material for responders.

The ERG's initial isolation distances must be applied from the green-bordered pages for toxic inhalation hazards; for other materials, the orange-bordered guide provides the isolation and protective action guidance.

A spill of a flammable liquid must be contained with absorbent material or dirt, and all ignition sources must be eliminated; the driver must not use water on a flammable liquid fire unless the ERG guide specifically permits it.

If a package is leaking, the driver must not handle it without protective equipment; the driver should keep the shipping paper available and inform responders of the material's name and UN number.

The driver must not re-enter the vehicle or attempt to move it if the vehicle is on fire or if the cargo is a toxic inhalation hazard; the driver should move to a safe distance and wait for responders.

After an incident, the driver must complete the written incident report and preserve the shipping papers, placards, and any damaged packaging for investigation.

The ERG's protective action distances are measured from the spill site; the driver must account for wind direction and move people crosswind, not downwind, to avoid exposure.

Placards are required for 1,001 lb or more aggregate gross weight of a Table 2 material, any quantity of a Table 1 material, and any quantity of a hazardous material listed in the placarding tables for the specific hazard class.

The shipping paper must contain the basic description in order: UN/NA identification number, proper shipping name, hazard class/division, and packing group (for example, UN1203, Gasoline, 3, PG II).

Emergency response information must accompany the shipping paper and include the nature of the hazard, fire/explosion risks, immediate first aid, and initial spill response; a DOT ERG guide number or a 24-hour emergency response telephone number satisfies the requirement.

A hazmat incident must be reported immediately by telephone to the National Response Center (1-800-424-8802) when there is a death, injury requiring hospitalization, property damage of $50,000 or more, evacuation, or a discharge of a hazardous material meeting the reportable quantity.

A written incident report on DOT Form 5800.1 must be submitted within 30 days of the incident, and a follow-up report is required if the incident involves a death, injury, or continuing hazard.

The Emergency Response Guidebook (ERG) is organized by guide numbers (yellow-bordered pages list UN/NA numbers, blue-bordered pages list chemical names, orange-bordered pages contain the guides); the green-bordered pages list initial isolation and protective action distances for toxic inhalation hazards.

Shipping papers must be within the driver's reach while driving, kept in a pouch on the driver's door, or in a holder mounted in clear view; when the driver leaves the vehicle, the papers must be left on the driver's seat or in the door pouch.

A hazardous material is any substance capable of posing an unreasonable risk to health, safety, and property when transported in commerce; the nine hazard classes run from Class 1 (explosives) through Class 9 (miscellaneous), with Class 7 radioactive and Class 6 toxic materials carrying special communication rules.

Cargo must be secured against shifting by blocking and bracing, tiedowns, or shoring; a hazmat load that can shift is a violation regardless of whether the material itself is packaged correctly.

Cyanides and acids must never be loaded together, and oxidizing materials must be kept away from flammable materials and organic peroxides; the segregation table in 49 CFR 177.848 governs which hazard classes may not be loaded together.

Packages bearing the POISON or POISON INHALATION HAZARD label must be loaded so that they are accessible and, when the vehicle is parked, so that the packages are not exposed to damage from other cargo.

Cylinders of compressed gas must be loaded upright, secured to prevent tipping, and kept away from heat sources; valves must be protected with caps or guards during transport.

Before loading, inspect each package for leaks, stains, odors, or damaged closures; a leaking package must not be loaded and must be reported to the shipper.

When loading or unloading, the engine must be shut off, brakes set, and wheels chocked; the driver must stay with the vehicle when the cargo is hazardous and the vehicle is on a public road.

Hazardous materials must be loaded so that the placards and labels remain visible and the shipping papers are not buried; the driver must be able to identify the material in an emergency.

Segregation rules also apply to food and animal feed: no hazardous material may be loaded in the same vehicle with foodstuffs unless the hazmat is packaged and separated to prevent contamination.

The driver must verify that the shipper has provided the correct shipping paper, emergency response information, and placards before accepting a hazmat load; a load with missing or inconsistent paperwork must be refused.

A cargo tank must be inspected and tested at least annually (external visual inspection and leak test) and at least every five years for internal inspection and pressure test, with the test dates stamped on the tank and recorded on the specification plate.

The cargo tank must be marked with the specification plate showing the tank's design pressure, capacity, and the materials it is approved to carry; a tank may only be loaded with a material listed on its specification plate.

Before loading, check that all valves, hatches, and outlets are closed and that the tank's emergency shutoff system is functional; the driver must verify the tank is empty of incompatible residue before loading a new product.

Bulk packages include cargo tanks, portable tanks, tank cars, and hopper cars; a bulk package is one that holds more than 119 gallons (450 liters) of liquid or more than 882 pounds (400 kg) of solid.

The driver must not smoke or use open flame within 25 feet of a cargo tank being loaded or unloaded, and the engine must be shut off during loading and unloading.

When loading flammable liquids, the driver must bond the tank to the loading rack and ground the vehicle to prevent static discharge; the bonding cable must be connected before the loading hose.

Cargo tanks carrying flammable liquids must have a fire extinguisher with a minimum 20 BC rating (or a 10 BC for smaller tanks) and the tank must be equipped with a remote shutoff valve.

The driver must check the cargo tank's internal valves and the emergency discharge control system before unloading; a tank without a functioning emergency shutoff must not be unloaded.

Hazmat vehicles must stop at railroad crossings, look both ways, and proceed only when the track is clear; the stop rule applies to vehicles carrying any quantity of hazardous material requiring placards and to cargo tanks, regardless of the load.

When stopping at a railroad crossing, the driver must stop within 15 to 50 feet of the nearest rail, set the parking brake, and listen before proceeding.

Hazmat vehicles may not be parked within 5 feet of a traveled roadway, and parking is prohibited within 300 feet of a bridge, tunnel, or railroad crossing unless the vehicle is attended.

Vehicles carrying hazardous materials are prohibited from tunnels and underpasses posted with a hazmat restriction; the driver must use an alternate route and must not enter a tunnel marked with a hazmat prohibition.

When parking a hazmat vehicle, the driver must set the parking brake, chock the wheels, and, if the vehicle is unattended, leave the shipping papers in the door pouch and ensure the vehicle is visible to traffic.

Hazmat vehicles must not be driven through a tunnel if the material is a flammable gas or liquid unless the tunnel is specifically approved; the ERG and local signage govern which tunnels are restricted.

The driver must maintain a safe following distance and reduce speed in bad weather; a hazmat vehicle carrying flammable liquids must not exceed the posted speed limit and must slow down for curves and construction zones.

When a hazmat vehicle is stopped by a railroad crossing gate or a train, the driver must not attempt to cross until the gate is fully raised and the track is clear; the vehicle must not stop on the tracks.

In a hazmat emergency, the first priority is to protect people: stop the vehicle, move upwind and uphill, and keep others away from the spill; the driver must not attempt to fight a fire involving hazardous materials.

The driver must call 911 and the National Response Center, then notify the shipper and the carrier; the shipping papers and placards identify the material for responders.

The ERG's initial isolation distances must be applied from the green-bordered pages for toxic inhalation hazards; for other materials, the orange-bordered guide provides the isolation and protective action guidance.

A spill of a flammable liquid must be contained with absorbent material or dirt, and all ignition sources must be eliminated; the driver must not use water on a flammable liquid fire unless the ERG guide specifically permits it.

If a package is leaking, the driver must not handle it without protective equipment; the driver should keep the shipping paper available and inform responders of the material's name and UN number.

The driver must not re-enter the vehicle or attempt to move it if the vehicle is on fire or if the cargo is a toxic inhalation hazard; the driver should move to a safe distance and wait for responders.

After an incident, the driver must complete the written incident report and preserve the shipping papers, placards, and any damaged packaging for investigation.

The ERG's protective action distances are measured from the spill site; the driver must account for wind direction and move people crosswind, not downwind, to avoid exposure.

Placards are required for 1,001 lb or more aggregate gross weight of a Table 2 material, any quantity of a Table 1 material, and any quantity of a hazardous material listed in the placarding tables for the specific hazard class.

The shipping paper must contain the basic description in order: UN/NA identification number, proper shipping name, hazard class/division, and packing group (for example, UN1203, Gasoline, 3, PG II).

Emergency response information must accompany the shipping paper and include the nature of the hazard, fire/explosion risks, immediate first aid, and initial spill response; a DOT ERG guide number or a 24-hour emergency response telephone number satisfies the requirement.

A hazmat incident must be reported immediately by telephone to the National Response Center (1-800-424-8802) when there is a death, injury requiring hospitalization, property damage of $50,000 or more, evacuation, or a discharge of a hazardous material meeting the reportable quantity.

A written incident report on DOT Form 5800.1 must be submitted within 30 days of the incident, and a follow-up report is required if the incident involves a death, injury, or continuing hazard.

The Emergency Response Guidebook (ERG) is organized by guide numbers (yellow-bordered pages list UN/NA numbers, blue-bordered pages list chemical names, orange-bordered pages contain the guides); the green-bordered pages list initial isolation and protective action distances for toxic inhalation hazards.

Shipping papers must be within the driver's reach while driving, kept in a pouch on the driver's door, or in a holder mounted in clear view; when the driver leaves the vehicle, the papers must be left on the driver's seat or in the door pouch.

A hazardous material is any substance capable of posing an unreasonable risk to health, safety, and property when transported in commerce; the nine hazard classes run from Class 1 (explosives) through Class 9 (miscellaneous), with Class 7 radioactive and Class 6 toxic materials carrying special communication rules.

Cargo must be secured against shifting by blocking and bracing, tiedowns, or shoring; a hazmat load that can shift is a violation regardless of whether the material itself is packaged correctly.

Cyanides and acids must never be loaded together, and oxidizing materials must be kept away from flammable materials and organic peroxides; the segregation table in 49 CFR 177.848 governs which hazard classes may not be loaded together.

Packages bearing the POISON or POISON INHALATION HAZARD label must be loaded so that they are accessible and, when the vehicle is parked, so that the packages are not exposed to damage from other cargo.

Cylinders of compressed gas must be loaded upright, secured to prevent tipping, and kept away from heat sources; valves must be protected with caps or guards during transport.

Before loading, inspect each package for leaks, stains, odors, or damaged closures; a leaking package must not be loaded and must be reported to the shipper.

When loading or unloading, the engine must be shut off, brakes set, and wheels chocked; the driver must stay with the vehicle when the cargo is hazardous and the vehicle is on a public road.

Hazardous materials must be loaded so that the placards and labels remain visible and the shipping papers are not buried; the driver must be able to identify the material in an emergency.

Segregation rules also apply to food and animal feed: no hazardous material may be loaded in the same vehicle with foodstuffs unless the hazmat is packaged and separated to prevent contamination.

The driver must verify that the shipper has provided the correct shipping paper, emergency response information, and placards before accepting a hazmat load; a load with missing or inconsistent paperwork must be refused.

A cargo tank must be inspected and tested at least annually (external visual inspection and leak test) and at least every five years for internal inspection and pressure test, with the test dates stamped on the tank and recorded on the specification plate.

The cargo tank must be marked with the specification plate showing the tank's design pressure, capacity, and the materials it is approved to carry; a tank may only be loaded with a material listed on its specification plate.

Before loading, check that all valves, hatches, and outlets are closed and that the tank's emergency shutoff system is functional; the driver must verify the tank is empty of incompatible residue before loading a new product.

Bulk packages include cargo tanks, portable tanks, tank cars, and hopper cars; a bulk package is one that holds more than 119 gallons (450 liters) of liquid or more than 882 pounds (400 kg) of solid.

The driver must not smoke or use open flame within 25 feet of a cargo tank being loaded or unloaded, and the engine must be shut off during loading and unloading.

When loading flammable liquids, the driver must bond the tank to the loading rack and ground the vehicle to prevent static discharge; the bonding cable must be connected before the loading hose.

Cargo tanks carrying flammable liquids must have a fire extinguisher with a minimum 20 BC rating (or a 10 BC for smaller tanks) and the tank must be equipped with a remote shutoff valve.

The driver must check the cargo tank's internal valves and the emergency discharge control system before unloading; a tank without a functioning emergency shutoff must not be unloaded.

Hazmat vehicles must stop at railroad crossings, look both ways, and proceed only when the track is clear; the stop rule applies to vehicles carrying any quantity of hazardous material requiring placards and to cargo tanks, regardless of the load.

When stopping at a railroad crossing, the driver must stop within 15 to 50 feet of the nearest rail, set the parking brake, and listen before proceeding.

Hazmat vehicles may not be parked within 5 feet of a traveled roadway, and parking is prohibited within 300 feet of a bridge, tunnel, or railroad crossing unless the vehicle is attended.

Vehicles carrying hazardous materials are prohibited from tunnels and underpasses posted with a hazmat restriction; the driver must use an alternate route and must not enter a tunnel marked with a hazmat prohibition.

When parking a hazmat vehicle, the driver must set the parking brake, chock the wheels, and, if the vehicle is unattended, leave the shipping papers in the door pouch and ensure the vehicle is visible to traffic.

Hazmat vehicles must not be driven through a tunnel if the material is a flammable gas or liquid unless the tunnel is specifically approved; the ERG and local signage govern which tunnels are restricted.

The driver must maintain a safe following distance and reduce speed in bad weather; a hazmat vehicle carrying flammable liquids must not exceed the posted speed limit and must slow down for curves and construction zones.

When a hazmat vehicle is stopped by a railroad crossing gate or a train, the driver must not attempt to cross until the gate is fully raised and the track is clear; the vehicle must not stop on the tracks.

In a hazmat emergency, the first priority is to protect people: stop the vehicle, move upwind and uphill, and keep others away from the spill; the driver must not attempt to fight a fire involving hazardous materials.

The driver must call 911 and the National Response Center, then notify the shipper and the carrier; the shipping papers and placards identify the material for responders.

The ERG's initial isolation distances must be applied from the green-bordered pages for toxic inhalation hazards; for other materials, the orange-bordered guide provides the isolation and protective action guidance.

A spill of a flammable liquid must be contained with absorbent material or dirt, and all ignition sources must be eliminated; the driver must not use water on a flammable liquid fire unless the ERG guide specifically permits it.

If a package is leaking, the driver must not handle it without protective equipment; the driver should keep the shipping paper available and inform responders of the material's name and UN number.

The driver must not re-enter the vehicle or attempt to move it if the vehicle is on fire or if the cargo is a toxic inhalation hazard; the driver should move to a safe distance and wait for responders.

After an incident, the driver must complete the written incident report and preserve the shipping papers, placards, and any damaged packaging for investigation.

The ERG's protective action distances are measured from the spill site; the driver must account for wind direction and move people crosswind, not downwind, to avoid exposure.

Placards are required for 1,001 lb or more aggregate gross weight of a Table 2 material, any quantity of a Table 1 material, and any quantity of a hazardous material listed in the placarding tables for the specific hazard class.

The shipping paper must contain the basic description in order: UN/NA identification number, proper shipping name, hazard class/division, and packing group (for example, UN1203, Gasoline, 3, PG II).

Emergency response information must accompany the shipping paper and include the nature of the hazard, fire/explosion risks, immediate first aid, and initial spill response; a DOT ERG guide number or a 24-hour emergency response telephone number satisfies the requirement.

A hazmat incident must be reported immediately by telephone to the National Response Center (1-800-424-8802) when there is a death, injury requiring hospitalization, property damage of $50,000 or more, evacuation, or a discharge of a hazardous material meeting the reportable quantity.

A written incident report on DOT Form 5800.1 must be submitted within 30 days of the incident, and a follow-up report is required if the incident involves a death, injury, or continuing hazard.

The Emergency Response Guidebook (ERG) is organized by guide numbers (yellow-bordered pages list UN/NA numbers, blue-bordered pages list chemical names, orange-bordered pages contain the guides); the green-bordered pages list initial isolation and protective action distances for toxic inhalation hazards.

Shipping papers must be within the driver's reach while driving, kept in a pouch on the driver's door, or in a holder mounted in clear view; when the driver leaves the vehicle, the papers must be left on the driver's seat or in the door pouch.

A hazardous material is any substance capable of posing an unreasonable risk to health, safety, and property when transported in commerce; the nine hazard classes run from Class 1 (explosives) through Class 9 (miscellaneous), with Class 7 radioactive and Class 6 toxic materials carrying special communication rules.

Cargo must be secured against shifting by blocking and bracing, tiedowns, or shoring; a hazmat load that can shift is a violation regardless of whether the material itself is packaged correctly.

Cyanides and acids must never be loaded together, and oxidizing materials must be kept away from flammable materials and organic peroxides; the segregation table in 49 CFR 177.848 governs which hazard classes may not be loaded together.

Packages bearing the POISON or POISON INHALATION HAZARD label must be loaded so that they are accessible and, when the vehicle is parked, so that the packages are not exposed to damage from other cargo.

Cylinders of compressed gas must be loaded upright, secured to prevent tipping, and kept away from heat sources; valves must be protected with caps or guards during transport.

Before loading, inspect each package for leaks, stains, odors, or damaged closures; a leaking package must not be loaded and must be reported to the shipper.

When loading or unloading, the engine must be shut off, brakes set, and wheels chocked; the driver must stay with the vehicle when the cargo is hazardous and the vehicle is on a public road.

Hazardous materials must be loaded so that the placards and labels remain visible and the shipping papers are not buried; the driver must be able to identify the material in an emergency.

Segregation rules also apply to food and animal feed: no hazardous material may be loaded in the same vehicle with foodstuffs unless the hazmat is packaged and separated to prevent contamination.

The driver must verify that the shipper has provided the correct shipping paper, emergency response information, and placards before accepting a hazmat load; a load with missing or inconsistent paperwork must be refused.

A cargo tank must be inspected and tested at least annually (external visual inspection and leak test) and at least every five years for internal inspection and pressure test, with the test dates stamped on the tank and recorded on the specification plate.

The cargo tank must be marked with the specification plate showing the tank's design pressure, capacity, and the materials it is approved to carry; a tank may only be loaded with a material listed on its specification plate.

Before loading, check that all valves, hatches, and outlets are closed and that the tank's emergency shutoff system is functional; the driver must verify the tank is empty of incompatible residue before loading a new product.

Bulk packages include cargo tanks, portable tanks, tank cars, and hopper cars; a bulk package is one that holds more than 119 gallons (450 liters) of liquid or more than 882 pounds (400 kg) of solid.

The driver must not smoke or use open flame within 25 feet of a cargo tank being loaded or unloaded, and the engine must be shut off during loading and unloading.

When loading flammable liquids, the driver must bond the tank to the loading rack and ground the vehicle to prevent static discharge; the bonding cable must be connected before the loading hose.

Cargo tanks carrying flammable liquids must have a fire extinguisher with a minimum 20 BC rating (or a 10 BC for smaller tanks) and the tank must be equipped with a remote shutoff valve.

The driver must check the cargo tank's internal valves and the emergency discharge control system before unloading; a tank without a functioning emergency shutoff must not be unloaded.

Hazmat vehicles must stop at railroad crossings, look both ways, and proceed only when the track is clear; the stop rule applies to vehicles carrying any quantity of hazardous material requiring placards and to cargo tanks, regardless of the load.

When stopping at a railroad crossing, the driver must stop within 15 to 50 feet of the nearest rail, set the parking brake, and listen before proceeding.

Hazmat vehicles may not be parked within 5 feet of a traveled roadway, and parking is prohibited within 300 feet of a bridge, tunnel, or railroad crossing unless the vehicle is attended.

Vehicles carrying hazardous materials are prohibited from tunnels and underpasses posted with a hazmat restriction; the driver must use an alternate route and must not enter a tunnel marked with a hazmat prohibition.

When parking a hazmat vehicle, the driver must set the parking brake, chock the wheels, and, if the vehicle is unattended, leave the shipping papers in the door pouch and ensure the vehicle is visible to traffic.

Hazmat vehicles must not be driven through a tunnel if the material is a flammable gas or liquid unless the tunnel is specifically approved; the ERG and local signage govern which tunnels are restricted.

The driver must maintain a safe following distance and reduce speed in bad weather; a hazmat vehicle carrying flammable liquids must not exceed the posted speed limit and must slow down for curves and construction zones.

When a hazmat vehicle is stopped by a railroad crossing gate or a train, the driver must not attempt to cross until the gate is fully raised and the track is clear; the vehicle must not stop on the tracks.

In a hazmat emergency, the first priority is to protect people: stop the vehicle, move upwind and uphill, and keep others away from the spill; the driver must not attempt to fight a fire involving hazardous materials.

The driver must call 911 and the National Response Center, then notify the shipper and the carrier; the shipping papers and placards identify the material for responders.

The ERG's initial isolation distances must be applied from the green-bordered pages for toxic inhalation hazards; for other materials, the orange-bordered guide provides the isolation and protective action guidance.

A spill of a flammable liquid must be contained with absorbent material or dirt, and all ignition sources must be eliminated; the driver must not use water on a flammable liquid fire unless the ERG guide specifically permits it.

If a package is leaking, the driver must not handle it without protective equipment; the driver should keep the shipping paper available and inform responders of the material's name and UN number.

The driver must not re-enter the vehicle or attempt to move it if the vehicle is on fire or if the cargo is a toxic inhalation hazard; the driver should move to a safe distance and wait for responders.

After an incident, the driver must complete the written incident report and preserve the shipping papers, placards, and any damaged packaging for investigation.

The ERG's protective action distances are measured from the spill site; the driver must account for wind direction and move people crosswind, not downwind, to avoid exposure.