Questions appearing on this CDL practice test:
How can you be sure you supplied air to a second trailer?
If a converter dolly is still under the second trailer and you unlock the pintle hook, what will probably happen?
You are visually checking the coupling of a converter dolly to the rear trailer. How much space should be between the upper and lower fifth wheel?
When you uncouple twin trailers, the last step is to
Converter dollies
You want to hook your combination to a second trailer that has no spring brakes. To do this without wheel chocks you should:
Empty trucks:
When parking your double or triple combination, you should look for a parking space
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:
Which of these in not a good thing to do when driving on slippery roads?
Double and triple combination vehicles are ________ stable than other types of commercial vehicles.
You are driving a 100-foot twin trailer combination at 50 mph. The road is dry, and visibility is good. You should keep at least _____ seconds of space ahead of you.
Which of these in not a good thing to do when driving on slippery roads?
Which of these will result in the best control on curves?
You are driving with double trailers and must use your brakes to avoid a crash. For emergency braking you should:
You are doing a walk around inspection of a double or triple trailer rig. You should be sure the converter dolly air tank drain valves are _____ and the pintle hook is _____.
During an inspection of a double or triple combination, check the usual things for any combination vehicle and check
You have connected the converter dolly to the front semitrailer and then connected the rear semitrailer to the converter dolly. How should you test the coupling?
The first step in uncoupling a converter dolly is
Why must you inspect your double or triple combination vehicle more extensively than a vehicle with only one such semitrailer?
