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 New York doubles triples test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The NY CDL doubles triples test covers the following sections of the New York CDL Manual: Driving Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Combination Vehicles, Doubles and Triples. Take this NY CDL practice test now to prepare for the actual test!
1. A trailer jackknife is more likely to happen when the trailer is:
loaded to its full capacity.
None of the above.
2. If your ABS malfunctions:
the parking brakes will not work.
you still have normal brake functions.
the service brake will not work.
you should immediately come to a complete stop.
3. You should be especially alert for drunk drivers:
around shopping areas.
late at night.
in the morning.
in the early evening.
4. Doubles:
are less likely to rollover than straight trucks.
are easier to drive than straight trucks.
require more reaction time than straight trucks.
None of the above.
5. If you must stop on a one-way or divided highway, place your warning devices:
10 feet, 100 feet, and 200 feet toward the approaching traffic.
10 feet, 50 feet, and 150 feet toward the approaching traffic.
100 feet, 200 feet, and 300 feet toward the approaching traffic.
50 feet, 100 feet, and 150 feet toward the approaching traffic.
6. Exhaust system parts should NOT:
rub against tires.
rub against fuel system parts.
be loose.
All of the above.
7. Emergency brakes must be held on by:
dynamic pressure.
hydraulic pressure.
mechanical force.
air pressure.
8. What should you do if you doubt you have safe space to pass under a low bridge?
Assume that the height posted at the bridges is correct.
If no warnings are posted, assume there is enough clearance under the bridge and proceed slowly.
Increase the weight of your vehicle to clearing under the bridge.
Go slowly, and take another route if you are not sure you can make it.
9. In a dual air brake system, if one air system is very low on pressure:
either the front or rear brakes will not be operating fully.
the effect won't be noticeable for the first 50 miles.
you should pump the brakes to restore pressure.
you should drive and brake as you always have.
10. If the fifth-wheel locking lever is not locked after the jaws close around the kingpin:
the parking brakes are on and the wheels are chocked.
the parking brakes are on and your vehicle is safe to drive.
cargo is properly blocked.
the coupling is not right and you should not drive until you get it fixed.
Page 1 of 2
Next page

NY Doubles Triples CDL Test

Number of questions: 20
Correct answers to pass:16
Passing score:80%
Share This Online CDL Test
Rate this Doubles Triples CDL Test
4.9 out of 5
based on 264 votes