FREE Michigan CDL Doubles Triples Practice Test (2024)

1. When driving at night, you should use ________ when you can.

2. When the wheels of a trailer lock up, which of the following is most likely to occur?

The trailer will tend to push the towing vehicle sideways (tractor jackknife).
The trailer will the trailer has overturn.
The trailer will tend to swing around (trailer jackknife).

3. Glad hands are:

4. Doubles and triples:

can't be turned suddenly.
can be turned suddently due to the low center of gravity.
can be stopped suddenly due to their weight.

5. The space under a heavily loaded vehicle can be very small. This can cause problems:

when crossing railroad tracks.
on dirt roads.
All of the above.

6. When coupling double trailers, you can secure the second trailer by:

chocking the wheels.
using the trailer spring brakes.
All of the above.

7. If the air compressor is belt-driven, you should check the air compressor drive belt before each trip. The belt should be:

8. When coupling double trailers, if the second trailer does not have spring brakes, to set the trailer emergency brakes you should:

1. Connect the emergency line 2. Drive the tractor close to the trailer 3. Disconnect the emergency line 4. Charge the trailer air tank.
1. Disconnect the emergency line 2. Drive the tractor close to the trailer 3. Charge the trailer air tank 4. Connect the emergency line.
1. Drive the tractor close to the trailer 2. Connect the emergency line 3. Charge the trailer air tank 4. Disconnect the emergency line.

9. Driving in very hot weather:

10. Which of the following vehicles is most likely to turn over?

MICHIGAN CDL DOUBLES TRIPLES PRACTICE TEST