FREE DE DMV Commercial Driver's Licenses Questions and Answers

Question 1

What should you do if your vehicle gets stuck on a railroad track and a train is approaching?

Accepted Answer

Get out of the vehicle and move away from the tracks

Answer

Try to push the vehicle off the tracks

Answer

Call emergency services and wait by the vehicle

Answer

Stay in the vehicle and honk the horn

Question 2

When driving a commercial vehicle with a manual transmission, what is the proper way to downshift when going down a steep grade?

Accepted Answer

Downshift before starting down the grade

Answer

Downshift after you reach the bottom of the grade

Answer

Downshift midway down the grade

Answer

Do not downshift at all

Question 3

Which part of the air brake system must be checked to ensure that it is properly adjusted?

Accepted Answer

The slack adjusters

Answer

The air compressor

Answer

The air lines

Answer

The air pressure gauge

Question 4

Which CDL endorsement is required to operate a school bus in Delaware?

Accepted Answer

S endorsement

Answer

P endorsement

Answer

T endorsement

Answer

H endorsement

Question 5

When performing a pre-trip inspection, what should you check in the engine compartment?

Accepted Answer

Fluid levels (oil, coolant, power steering)

Answer

Tire pressure

Answer

Battery connections

Answer

Condition of the steering wheel