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Which of these isNOT a good thing to do when driving on slippery roads?
Use the engine brake or speed retarder.
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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:
Ais escape from the open valve.
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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 ____.
Closed, latched.
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A voncerter dolly is still under the second trailer when you unlock the pintle hook. What is likely to happen?
The dolly tow bar may fly up.
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You must drive through deep following water. You should NOT?
Drive through quickly.
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Some large trucks have convex of "spot" mirrors. These mirrors:
Make things look smaller and farther away than they really are.
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Converter dollies:
Are used to connect a tractor trailer combination to another trailer.
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When driving a double or triple, you need more space because they:
Can't be stopped or turned quickly.
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To uncouple the rear trailer in a set of doubles, the shut off valveat therear of the front trailer should be___.
Closed.
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Which of these will result in the best control on a curve?
Slow to a safe speed before entering the curve, then accelerate slightly through it.
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When hauling triple trailers at a speed less than 40mph, you should leave at least ____seconds for every ten feet of you truck between you and the vehicles ahead of you.
1
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Which of these statements about emergency steering is true?
If you have traffic on both sides of your vehicle and something is blocking you lane, a move to the right may still be the best.
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You are driving with double trailers and must use your brakes to avoid a crash. For emergency braking you should?
Use controlled or stab braking.
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You can release the dolly brake by:
Opening the air tank petcock.
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To check that the converter dolly is securely coupled to the rear trailer, you should?
Pull gently against the pin of the second semi-trailer.
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