# Doubles Triples Test #3

The flashcards below were created by user Kooky on FreezingBlue Flashcards.

1. Which of these isNOT a good thing to do when driving on slippery roads?
Use the engine brake or speed retarder.
2. 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.
3. 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.
4. 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.
5. You must drive through deep following water.  You should NOT?
Drive through quickly.
6. Some large trucks have convex of "spot" mirrors.  These mirrors:
Make things look smaller and farther away than they really are.
7. Converter dollies:
Are used to connect a tractor trailer combination to another trailer.
8. When driving a double or triple, you need more space because they:
Can't be stopped or turned quickly.
9. To uncouple the rear trailer in a set of doubles, the shut off valveat therear of the front trailer should be___.
Closed.
10. 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.
11. 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
12. 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.
13. 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.
14. You can release the dolly brake by:
Opening the air tank petcock.
15. 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.
 Author: Kooky ID: 190717 Card Set: Doubles Triples Test #3 Updated: 2012-12-27 22:51:15 Tags: Doubles Triples Test Endorsement Folders: Description: Doubles Triples Test #3 Show Answers: