FREE Texas CDL Doubles Triples Practice Test (2024)

1. Rollovers happen when drivers:

2. Most heavy duty vehicles use ___ air brake systems for safety.

3. To know if your vehicle is equipped with ABS, look for:

a yellow ABS malfunction lamps on the instrument panel.
the ABS logo on the steering wheel.
an ABS placard.
the ABS shipping paper.

4. When going down a steep downgrade, you should primarily brake using:

the service brakes.
the emergency brake.
the parking brake.
the braking effect of the engine.

5. When inspecting the coupling, make sure the fifth-wheel jaws have closed around the:

6. Exhaust system parts should NOT:

rub against tires.
rub against fuel system parts.
be loose.
All of the above.

7. You are driving a modern truck with a manual transmission. When going down a hill you should usually:

use the same gear you would use to go up the hill.
use a lower gear than would be required to go up the hill.
downshift after your speed has already built up.
shift into neutral and coast.

8. The weight of a truck:

has no effect on stopping distance.
has an impact on stopping distance.
is not as important as the vehicle's center of gravity in determining stopping distance.
None of the above.

9. If a tire fails while you are driving, you should:

brake as hard as possible.
call your supervisor for instructions.
stay off the brake until your vehicle has slowed down.
stop on the roadway if possible.

10. The trailer hand valve should be used:

to check that the trailer emergency brakes are on.
to check that the trailer is locked onto the tractor.
to check that the fire extinguisher is charged.
to test the trailer brakes.

TEXAS CDL DOUBLES TRIPLES PRACTICE TEST