CDL Doubles Triples Practice Test (2024)

1. To start moving without rolling back, you should:

apply the trailer brake hand valve.
put on the parking brake whenever necessary.
partly engage the clutch before you take your right foot off the brake.
All of the above.

2. As you approach off ramps and on ramps, remember:

that downgrades make it easier to reduce speed.
that the posted speed limit may not be safe for larger vehicles.
to maintain your highway speed.
to always brake and turn at the same time.

3. When stopping you should push the brake pedal down:

4. In vehicles with air brakes, the air compressor governor:

controls when the air storage tanks will pump air into the air compressor.
controls how much air the air compressor will pump into the air storage tanks.
controls when the air compressor will pump air into the air storage tanks.
None of the above.

5. If the drive wheels start to skid:

accelerate slightly to regain control.
push in the clutch to let them turn freely.
use the brakes to slow down.
All of the above.

6. An item that is 15 feet long placed on a flatbed trailer should have at least:

7. Skids caused by acceleration can usually be stopped by:

applying the brakes firmly.
coming to a complete stop.
speeding up.
taking the foot off the accelerator.

8. Which of the following is not proper tie-down equipment:

9. When you discover a fire, if the trailer doors are hot you should not open them because:

the temperature of the trailer should not be changed in any way.
you should use the fire extinguisher on the door.
with air many fires do less damage.
opening the doors lets air in and may make the fire flare up.

10. If an aggressive driver is involved in an accident down the road, you should:

try to get their vehicle to the side of the road.
make eye contact with the driver.
confront the aggressive driver.
stop a safe distance from the accident scene, wait for the police and report the behavior you witnessed.

TN CDL DOUBLES TRIPLES TEST - PRACTICE TEST