Save Time and Get a Pass Guarantee! LIMITED-TIME OFFER: Get CDL PREMIUM Now and SAVE $64! Upgrade To Premium


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 Wyoming doubles triples test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The WY CDL doubles triples test covers the following sections of the Wyoming CDL Manual: Driving Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Combination Vehicles, Doubles and Triples. Take this WY CDL practice test now to prepare for the actual test!
1. To prevent rollover, you should:
drive on the shoulder of the road when possible.
drive in the left lane.
turn the engine off while turning.
drive slowly around corners.
2. When approaching a double railroad track, you should:
expect to hear a train when it's approaching.
remember that trains may be more frequent.
rely upon the presence of warning signals.
remember that a train on one track may hide a train on the other track.
3. To warn drivers behind you when you see you'll need to slow down, you should:
use your headlights.
flash the brake lights.
sound your horn.
turn off your lights.
4. Combination vehicles have __ air lines.
5. Engine oil pressure should come up to normal within _________ after the engine is started.
two minutes
ten minutes
five minutes
6. Most heavy-duty vehicles use:
air brakes.
hydraulic brakes.
pressure brakes.
solid brakes.
7. If your brakes fail on a steep mountain downgrade, you should:
use an escape ramp if it is available.
go right if the shoulder is clear.
leave the road immediately.
change lanes after making sure there is enough room.
8. You hear a loud "bang" which sounds like a tire blowout. You should:
check the tires at the next stop.
keep driving as normal.
inspect your tires with your mirrors.
assume you have a tire failure.
9. Fully loaded rigs:
are less likely to roll over than empty rigs.
are just as likely to roll over as empty rigs.
are much more likely to roll over than empty rigs.
None of the above.
10. If you must make an emergency stop, you should:
use the hand brake before the brake pedal.
brake in a way that will keep your vehicle in a straight line.
apply the brakes as hard as you can to lock them.
None of the above.
Page 1 of 2
Next page  
Rate This Free Test
5 out of 5
based on 289 votes

WY CDL Doubles Triples Test

Number of questions: 20
Correct answers to pass:16
Passing score:80%
Number of questions: 20
Correct answers to pass:16
Passing score:80%
Share This Online CDL Test