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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 Connecticut doubles triples test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The CT CDL doubles triples test covers the following sections of the Connecticut CDL Manual: Driving Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Combination Vehicles, Doubles and Triples. Take this CT CDL practice test now to prepare for the actual test!
1. You should always try to back toward the driver's side because:
backing toward the left side is more dangerous.
you can watch the rear of your vehicle out the side window.
you can more easily correct any steering errors.
None of the above.
2. When you see you will need to slow down, you can warn drivers behind you by:
turning on the right turn signal.
making gestures.
tapping the brakes a few times.
slamming on the brakes.
3. Hanging meat in a refrigerated truck can be:
a very unstable load with a high center of gravity.
a very stable load if properly distributed.
a very unstable load with a low center of gravity.
a very stable load with a low center of gravity.
4. What is the minimum tread depth for tires other than front tires?
8/32 inch
4/16 inch
4/32 inch
2/32 inch
5. If coolant has to be added to a system without a recovery tank, you should:
keep the engine running while adding coolant.
turn the radiator cap quickly to the first stop.
wait until the engine has cooled before adding coolant.
never use thick cloth to touch the radiator cap.
6. If you're feeling tired while driving you should:
eat something.
drink coffee.
stop driving and get some rest.
increase your speed to get to your destination quicker.
7. When preparing to make a right turn, you should NOT turn wide to the left as you start the turn. Why?
A following driver may try to pass you on the right.
It makes the turn harder.
Turning wide to the left can cause your vehicle to tilt.
A following driver may try to pass you on the left.
8. When backing, you should:
use the mirrors on both sides.
only use mirror on the driver's side.
back and turn toward the right side whenever possible.
back quickly.
9. No matter how small the cargo is, it should have at least:
6 tie-downs.
1 tie-down.
2 tie-downs.
4 tie-downs.
10. When approaching a double railroad track, you should:
rely upon the presence of warning signals.
remember that trains may be more frequent.
expect to hear a train when it's approaching.
remember that a train on one track may hide a train on the other track.
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CT CDL Doubles Triples Test

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