In Partnership with Howard County Library System

View instructions
Drivers who want to drive combination vehicles must pass the combination vehicles test. The Maryland CDL combination test consists of 20 questions, and you'll need at least 16 correct answers to pass (80%). The test covers the combination vehicles section of the Maryland CDL Manual. Take this practice test now to prepare for the actual MD CDL combination test!
1. You are inspecting your vehicle during a trip. What should you do?
Use your senses to check for problems.
Check critical items such as tires, brakes, and lights.
Watch gauges for signs of trouble.
All of the above.
2. When using a fire extinguisher, you should stay:
at whatever distance you think is safe.
as close to the fire as possible, without getting burnt.
at least 10 feet away from the fire.
as far away from the fire as possible.
3. Rollovers happen when drivers:
turn too fast.
brake too hard.
stop too often.
turn too slowly.
4. A bridge formula permits:
less maximum axle weight for axles that are far apart.
less maximum axle weight for axles that are close together.
more maximum axle weight for axles that are closer together.
more maximum axle weight for axles that are far apart.
5. If you get stuck on the railroad tracks, the first thing you should do is:
immediately get out of the cab and move away from the tracks.
scream for help.
try to move your vehicle until you see the train.
stay in your vehicle and call 911.
6. If you're feeling tired while driving you should:
increase your speed to get to your destination quicker.
drink coffee.
eat something.
stop driving and get some rest.
7. When should you use chocks to park a trailer without spring brakes?
Only when parking downhill
Only when parking uphill
8. If you must make an emergency stop, you should:
brake in a way that will keep your vehicle in a straight line.
apply the brakes as hard as you can to lock them.
use the hand brake before the brake pedal.
None of the above.
9. After a tire has been changed, the driver should stop a short while later to:
check tread separation.
deflate the tire to 10 psi.
check the tightness of the nuts.
decrease tire pressure.
10. Which of these is NOT part of the basic method for shifting up?
Release the clutch and press the accelerator at the same time.
Accelerate while pressing the clutch and turn toward the driver's side.
Release the accelerator, push in the clutch and shift to neutral at the same time.
Push in the clutch and shift to the higher gear at the same time.
Page 1 of 2
Next page

MD CDL Combination Test

Number of questions: 20
Correct answers to pass:16
Passing score:80%
Share This Online CDL Test
Rate this CDL Combination Test
4.7 out of 5
based on 109 votes