Free Doubles and Triples Practice Test designed to help you pass the written exam with ease

By Tommy on Sunday, November 22nd, 2009 | Comments Off

Doubles and Triples Practice Test

Taking the CDL written exam can be stressful, feel free to practice on our free practice exam. This practice exam has been put together by a former CDL instructor and hits all the right points. You can even choose to e-mail yourself the results if you so desire. This practice test will help you prepare for the Doubles and Triples test when testing for your CDL. Good luck.

Doubles/triples are less stable than other commercial vehicles.

True

False

A safe speed on a curve for a
straight truck or a single trailer combination vehicle may be too fast for a set of doubles or triples.

True

False

Doubles and triples are less likely to turn over than other combination vehicles because of the crackthe-whip effect.

True

False

The last trailer in a combination is most likely to turn over.

True

False

There are more critical parts to check when you have two or three trailers.

True

False

For the safest handling on the road, the more heavily loaded semitrailer should be in first position behind the tractor.

True

False

A converter gear on a dolly is a coupling device of one or two axles and a fifth wheel by which a semitrailer can be coupled to the rear of a tractor-trailer combination forming a double bottom rig.

True

False

Some converter dollies have spring brakes.

True

False

Inspecting Doubles and Triples;
Shut-off valves at the rear of front trailers should be open.

True

False

Converter Dollies will have a yellow lamp on the left side of the dolly If equipped with antilock brakes.

True

False

Check the brakes on a double or triple trailer as you would any combination vehicle.