View instructions
Safely pulling double and triple trailers requires knowledge and skill. If you want to pull double or triple trailers, you must add the Doubles/Triples (T) endorsement to your Class A CDL. The Virginia doubles triples test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The VA CDL doubles triples test covers the following sections of the Virginia CDL Manual: Driving Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Combination Vehicles, Doubles and Triples. Take this VA CDL practice test now to prepare for the actual test!
1. Most heavy-duty vehicles use:
solid brakes.
air brakes.
hydraulic brakes.
2. Truck tractors with air brakes built after March 1, 1997, are required to be equipped with:
hydraulic brakes.
a rear backup camera.
anti-lock brakes.
3. You are driving a vehicle with air brakes when the low air pressure warning light and buzzer come on. You should:
slow down and test your brakes.
pull off the road and stop immediately.
activate your hazard lights and drive to the nearest place where you can stop.
4. Dollies with ABS are required to have a malfunction lamp:
on the rear.
on the right side.
on the left side.
5. Hanging meat in a refrigerated truck:
will not affect safe driving ability.
can be a very unstable load.
should never be transported.
6. Air pressure should build up in a single air system, within about:
3 minutes.
15 minutes.
10 minutes.
7. If you're feeling tired while driving you should:
eat something.
drink coffee.
stop driving and get some rest.
8. Having ABS on only the trailer:
makes the trailer more likely to swing out.
still gives you more control over your vehicle during braking.
is very dangerous.
9. Which of the following statements about retarders is NOT correct?
Retarders help you avoid skids.
Retarders help slow a vehicle, reducing the need for using brakes.
You should turn the retarder off whenever the road is wet, icy, or snow covered.
10. When you discover a fire, if the trailer doors are hot you should not open them because:
with air many fires do less damage.
opening the doors lets air in and may make the fire flare up.
the temperature of the trailer should not be changed in any way.
Page 1 of 2
Next page

VA CDL Doubles Triples Test

Number of questions: 20
Correct answers to pass:16
Passing score:80%
Share This Online CDL Test
Rate this CDL Doubles Triples Test
4.6 out of 5
based on 216 votes