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Maryland CDL Practice Test: Class A - Test 7 2019

(From the 2019 Maryland CDL Handbook)
Number of tests: 7
Number of questions: 30
Passing score: 80

Directions: When applying for this license, applicants must pass a 50-question test. And applicants must score 80% to pass the test. The following questions are based on the details provided in the Maryland Commercial Driver Handbook. Endorsements that may be used with a Class A CDL include Hazardous Materials, Passenger, Double and Triples, HazMat and Tanker, Air Brakes and School bus. If you need additional information, please contact your local DMV office. You can find your nearest DMV office at Maryland DMV locations.

You have made 2 errors so far.
1. What is the purpose of a front-end header board?
  • Require less turning radius than cars

  • Take longer distances than cars to stop

  • Require less time to pass on a downgrade than cars

  • Require less time to pass on an incline than cars

2. The emergency brakes will come on __________.
  • 30

  • 90

  • 15

  • 60

3. To test the trailer emergency brakes you need to first ______.
  • No stopping or standing.

  • No parking here to the corner.

  • No parking anytime.

  • Disabled parking spot.

4. It's important that a warning signal comes on before the air pressure in the tank falls below _______.
  • Assure pedestrian safety.

  • Show current local road conditions.

  • Keep traffic flowing smoothly.

  • Test future traffic signal needs.

5. What is the device that connects the service and emergency air lines from the truck to the trailer?
  • You may only drive straight ahead.

  • Vehicles moving in any direction must stop.

  • You must wait for a green light.

  • You may drive only in the direction of the green arrow.

6. When you are transporting cargo, you should inspect your cargo within the first ___ miles.
  • Drive with the flow of traffic

  • Drive slower than the flow of traffic

  • Drive faster than the flow of traffic

  • Fluctuate your speed to keep alert