Converter dolly air tank drain valve

Doubles and triples must be driven very smoothly to avoid rollover or jacknife. True or False? True False. If you want to couple a second trailer to you combiantion vehicle, secure it by using the:. What is likely to happen if the pintle hook unlocked with the dolly still under the second trailer? When inspecting coupled doubles and triples, make sure the pintle hook is:.

Which of these are the correct positions for sut off valves in doubles and triples? Open for the rear of thefront trailers and closed fort the rear of the last trailer.

You are driving a set of doubles, and a set of trailer wheels goes into a skid. Which of these is mostly likely to occur?

Home Get App Take Quiz Create Driving a truck with doubles or triples trailers requires a driver to: Allow more following distance than for smaller vehicles. How can yoube sure you suppliedair to a second trailer?

Go to the rear of the secondtrailer and open the emergency line shut off. When uncoupling the rearsemi trailer, you should lower the converter dolly landing gear: Enough to remove some of the weight from the dolly. A converter dolly has: A separate air supply tank. The heaviest. When you're finished, check your score and results.

You can reset the test and retake it as needed. When driving with more than one trailer, which trailer should be the first one behind the tractor? You are driving a foot twin trailer combination at 50 mph.

The road is dry and the visibility is good. With the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the rig. When you do this, you should hear: A Air escape from the open valve B The service brakes slowly move to the fully applied position C The emergency line valve open and release air D None of the above 4.

You are driving with double trailers and must use your brakes to avoid a crash. For emergency braking you should: A Push the brake pedal as hard as you can and hold it there B Use only the trailer brakes C Use controlled or stab braking D None of the above 5. Converter dollies: A Have little braking power because they are small B Often do not have spring brakes C Usually need a glad hand converter D All of the above 6.