VA CDL DOUBLES TRIPLES TEST - PRACTICE TEST

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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. When coupling double trailers, if the second trailer does not have spring brakes, to set the trailer emergency brakes you should:
1. Drive the tractor close to the trailer 2. Connect the emergency line 3. Charge the trailer air tank 4. Disconnect the emergency line.
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.
2. Which of the following is a common cause of truck fires?
Short circuits due to loose connections.
Under-inflated tires and duals that touch.
All of the above.
3. If a trailer does not have spring brakes, to keep the trailer from moving you should:
park on a slight decline.
use wheel chocks.
use the service brakes.
4. You must have at least 4/32 inch tread depth in every major groove on front tires and at least ___ inch on other tires.
2/32
1/32
4/32
5. Emergency brakes must be held on by:
mechanical force.
air pressure.
hydraulic pressure.
6. A trailer jackknife is more likely to happen when the trailer is:
overloaded.
empty.
loaded to its full capacity.
7. After the pre-trip inspection, drivers should inspect their cargo and its securing devices again within ________ after beginning the trip.
25 miles
50 miles
20 miles
8. When preparing to make a right turn, you should NOT turn wide to the left as you start the turn. Why?
It makes the turn harder.
A following driver may try to pass you on the right.
Turning wide to the left can cause your vehicle to tilt.
9. In a dual air brake system, if one air system is very low on pressure:
you should pump the brakes to restore pressure.
either the front or rear brakes will not be operating fully.
you should drive and brake as you always have.
10. For safety during a trip, you should:
check critical items when you stop.
watch gauges for signs of trouble.
All of the above.
 
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VA Doubles Triples Test

Number of questions: 20
Correct answers to pass:16
Passing score:80%
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