In Partnership with Howard County Library System

View instructions
The CDL general knowledge test is required to be taken by all CDL applicants. The Maryland CDL test consists of 50 questions. To pass, you must correctly answer at least 40 questions (80%). The general knowledge test covers the contents of the Maryland CDL Manual. All CDL applicants (Class A, B and C) must study the following sections: Driving Safely, Transporting Cargo Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Vehicle Inspection Test, Basic Control Skills Test, Road Test. In addition, the Class A CDL test will include questions based on the Combination Vehicles section. Take this CDL practice test now to prepare for the actual MD general knowledge test! To get your CDL, you must pass both the knowledge and skills tests. CDL knowledge tests include: General Knowledge, Passenger Transport, Air Brakes, Combination Vehicles, Hazardous Materials, Tanker Vehicles, Doubles/Triples, School Bus, Firefighter. Depending on what class of license (A, B or C) and endorsements you need, you must take one or more knowledge tests. A special endorsement is also required to drive certain types of vehicles. The following endorsements may be used with a Class A, B or C CDL: HazMat (H), Tank Vehicles (N), Tank Vehicles Transporting Hazardous Materials (X) and Passenger Transport (P). The School Bus endorsement (S) is only available for Class A or B CDL, and the Doubles/Triples endorsement (T) is only available for Class A driver's licenses.
1. If you hear a loud loud "bang" and the steering feels "heavy", you should:
pump the brakes until the vehicle has slowed down.
brake hard and pull off the road.
check your rearview mirrors to see if you have a flat tire.
hold the steering wheel firmly and stay off the brake.
2. In coming down a long, steep downgrade, which of the following is NOT a factor you should consider to select an appropriate safe speed?
Steepness of the grade
Your schedule
Road conditions
3. Hanging meat in a refrigerated truck:
can be a very unstable load.
should never be transported.
creates a low center of gravity.
will not affect safe driving ability.
4. The height of the vehicle's center of gravity:
should only be a concern when driving in high winds.
is very important for safe handling.
should only be a concern when loading a vehicle.
should only be a concern when driving a vehicle.
5. Which of these should you check before driving in winter?
Coolant level and antifreeze amount
Windshield wiper blades
All of the above.
6. Before entering a curve, drivers should:
put the transmission in Neutral.
drive on the shoulder.
downshift to the right gear.
speed up.
7. "Tire load" means:
the specified weight a tire can carry at the minimum pressure.
the maximum safe weight a tire can carry at a specified pressure.
the specified weight a tire can carry at the maximum pressure.
the minimum weight a tire can carry at a specified pressure.
8. Which of the following is NOT correct? Anti-lock brakes:
help drivers avoid skids caused by over braking.
require drivers to apply the brakes as hard as they can without locking the wheels.
help drivers avoid wheel lock up.
give drivers more control over the vehicle during braking.
9. When drivers make a turn they should:
look in the direction they are going to turn.
look behind the vehicle.
look in the opposite direction of the turn.
look far ahead.
10. If your brakes get wet, it can cause them:
to grab.
to apply unevenly.
to be weak.
All of the above.
Page 1 of 5
Next page

CDL Knowledge Test MD

Number of questions: 50
Correct answers to pass:40
Passing score:80%
Share This Online CDL Test
Rate this CDL Knowledge Test
4.5 out of 5
based on 266 votes