Maryland CDL General Knowledge study materials
Maryland CDL General Knowledge study resources

Maryland CDL General Knowledge study plan

Maryland CDL General Knowledge · Give each week a clear focus.

8 weeks · About 6 hours per week

Week 1

General Knowledge (vehicle inspection, basic control, shifting, backing, speed management, space management, hazard perception, emergency procedures, railroad crossings, night driving, mountain driving, fatigue, alcohol and drugs)

  • Read the full General Knowledge section on vehicle inspection, then recite the seven-step pre-trip inspection sequence from memory and explain what a defect in each step would look like.

  • Practice the basic control skills vocabulary (backing, turning, shifting) by writing a plain-language definition for each term and matching it to a real driving situation.

  • Build a one-page cheat sheet of Maryland-specific rules covered in the manual, including speed limits, railroad crossing procedures, and stopping distances.

  • Complete 40 practice questions on General Knowledge and log every missed question with the reason for the miss.

Your checkpoint

A handwritten or typed one-page General Knowledge cheat sheet plus a scored 40-question practice set with a written error log.

Week 2

General Knowledge (vehicle inspection, basic control, shifting, backing, speed management, space management, hazard perception, emergency procedures, railroad crossings, night driving, mountain driving, fatigue, alcohol and drugs)

  • Study speed management, space management, and hazard perception, then calculate following distance at 30, 45, and 55 mph using the manual's seconds-based method.

  • Explain the emergency procedures for brake failure, tire blowout, and hydroplaning in your own words without looking at the manual.

  • Describe night driving and mountain driving hazards and list at least five specific countermeasures for each.

  • Identify the signs of fatigue and the legal consequences of alcohol and drug use for a CDL holder in Maryland.

  • Answer 60 mixed General Knowledge questions and review every wrong answer until you can explain the correct one aloud.

Your checkpoint

A written response to 12 scenario prompts (three each for speed/space, emergencies, night/mountain, fatigue/alcohol) scored against the manual, plus a 60-question practice score of 85% or better.

Week 3

Air Brakes

  • Diagram the air brake system from compressor to brake chambers, labeling the governor, reservoir, safety valve, and slack adjuster.

  • Recite the air brake pre-trip test sequence, including the static leak test, applied leak test, and low-pressure warning check, with the correct pressure thresholds.

  • Explain what causes brake fade and how to control speed on a long downgrade using engine braking and snubbing.

  • Complete 50 Air Brakes practice questions and correct every missed item in writing.

Your checkpoint

A labeled air brake system diagram plus a written, step-by-step air brake inspection checklist with pressure values, and a 50-question practice score of 85% or better.

Week 4

Combination Vehicles

  • Explain the coupling and uncoupling procedure in order, including the tug test, fifth wheel inspection, and air line connection order.

  • Describe how to check the landing gear, glad hands, and electrical cord, and list the defects that would put a combination vehicle out of service.

  • Explain off-tracking and rearward amplification and how each affects turning and lane changes with a tractor-trailer.

  • Complete a 50-question Combination Vehicles practice set and review every miss.

Your checkpoint

A written coupling and uncoupling checklist in correct sequence, plus a 50-question practice score of 85% or better.

Week 5

Hazardous Materials

  • Classify hazardous materials by hazard class and identify the placarding requirements for each class.

  • Explain the shipping paper requirements, including the basic description order and emergency response information.

  • Describe the rules for loading and segregating incompatible hazardous materials and the parking and routing restrictions for placarded loads.

  • Explain the emergency response steps for a hazardous materials spill, including when to evacuate and whom to notify.

  • Complete 50 Hazardous Materials practice questions and correct every missed item.

Your checkpoint

A hazard class and placarding reference table plus a 50-question practice score of 85% or better.

Week 6

Cargo Securement / Cargo Handling

  • Explain the four forces that affect cargo securement and how each one changes with load weight and speed.

  • Identify the working load limits and inspection criteria for chains, straps, binders, and tiedowns, and state the minimum number of tiedowns for loads of different lengths and weights.

  • Describe the securement requirements for specific cargo types such as logs, dressed lumber, metal coils, and vehicles.

  • Complete 40 Cargo Securement practice questions and correct every missed item.

Your checkpoint

A cargo securement decision sheet covering tiedown counts and working load limits for at least five cargo types, plus a 40-question practice score of 85% or better.

Week 7

Passenger Transport & School Bus

  • Explain the loading and unloading rules for passenger transport, including standee limits, aisle clearance, and emergency exit access.

  • Describe the additional inspection items for a school bus, including the stop arm, crossing gate, and child check procedure.

  • Explain the loading and unloading procedure for school buses, including when to use flashing lights and how to supervise students crossing the road.

  • Answer 40 combined Passenger Transport and School Bus questions and review every miss.

Your checkpoint

A side-by-side comparison chart of passenger versus school bus inspection and loading rules, plus a 40-question practice score of 85% or better.

Week 8

Tanker Vehicles & Doubles and Triples

  • Explain the surge and slosh effects in tank vehicles and the driving techniques that counter them.

  • Describe the inspection points unique to tankers, including baffles, bulkheads, and dome covers.

  • Explain the differences between doubles and triples in coupling, converter dollies, and sway control.

  • Take a full-length timed practice exam covering all nine domains and review every missed question.

  • Schedule the Maryland CDL knowledge test and confirm which endorsement tests you still need.

Your checkpoint

A full-length timed practice exam with a score of 85% or better in every domain and a scheduled test date.

Milestones

Week 2: Score 85% or better on a 60-question General Knowledge practice set and explain the correct answer for every missed question aloud without notes.

Week 4: Recite the air brake inspection sequence and the coupling procedure from memory with no more than one prompt each.

Week 6: Score 85% or better on a combined Hazardous Materials and Cargo Securement practice set of 50 questions.

Week 8: Score 85% or better in every one of the nine domains on a full-length timed practice exam and have a confirmed Maryland CDL test appointment.