FREE ME CDL Doubles/Triples Test 2024 (Practice Test)

1. In newer vehicles with air brakes, you put on the parking brake:

using a P-shaped, yellow control knob.
placing the transmission in Park.
using a diamond-shaped, yellow, push-pull control knob.

2. When making a turn you should:

signal early.
make gestures to get the attention of other drivers.
honk your horn.

3. The parking brake:

should be used when driving in bad weather.
should be used when you need to apply the brakes firmly.
should be used whenever you park.

4. When driving a double or triple:

the more heavily loaded trailer should be in the rear.
all trailers should have the same weight.
the more heavily loaded trailer should be directly behind the tractor.

5. With an engine fire, you should NOT:

turn the engine off as soon as possible.
open the hood.
shoot foam from the vehicle’s underside.

6. Because of the "crack-the-whip" effect, doubles and triples:

are much slower than other combination vehicles.
are more likely to run out of gas than other combination vehicles.
are more likely to turn over than other combination vehicles.

7. Which of these describes the proper braking technique when driving on a long and steep downgrade?

Apply the brakes. When your speed has been reduced to 5 mph below your safe speed, release the brakes. When your speed has increased to your safe speed, repeat the previous steps.
Release the brakes until your speed is 5 mph above your safe speed, then apply the brakes. When your speed has decreased to your safe speed, repeat the previous steps.
Apply the brakes until your speed has been reduced to 5 mph, then release the brakes. When your speed has increased to your safe speed, repeat the previous steps.

8. When driving a double or triple, you should:

increase your following distance.
decrease your following distance.
drive in the left lane whenever possible.

9. Weight that is loaded so there is a high center of gravity:

makes a vehicle easier to handle.
reduces the chance that the load will shift to the side or fall off.
causes greater chance of rollover.

10. To make the brakes work, air brakes use:

DOUBLES TRIPLES TEST ME - CDL PRACTICE TEST