Doubles And Tripples Flashcards
You should check the height of the trailer before connecting a converter dolly to a second or third trailer. The trailer height is right when
A. The trailer will be raised slightly when the converter dolly is backed under it
B. The center of the kingpin lines up with the locking jaws
C. The kingpin rests on the fifth wheel
A
The best way to stop all skids is to
A. Restore traction to the tires
B. Use stab or controlled braking
C. Counter steer and accelerate
A
When does the drivers manual advise disconnecting the steering axle brakes to help keep the rig straight?
A. Any time you must
B. Never
C. When the road is dry
B
When driving with more than one trailer, which trailer should be the first one behind the tractor?
A. The shortest trailer
B. The heaviest trailer
C. The lightest trailer
B
Driving a truck with double or triple trailers requires a driver to
A. Allow more following distance than for smaller vehicles
B. Use special care in bad weather and mountain conditions
C. Do both things
C
Which of these will result in the best control on curves?
A. Braking during the turn
B. Slowing to a safe speed before entering the curve, then accelerate slightly during the curve
C. Downshift after you enter the curve
B
You are driving 100’ vehicle with double trailers at 30mph. The road is dry and the visibility is good. You should keep at least—— seconds of space ahead of you
A. 9
B.10
C. 11
B
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 controlled or stab braking
C. Use only the trailer brakes
B
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 Pinole hook is ——
A. Open,free
B. Closed, latched
C. Open, latched
B
A converter dolly is
A. An electronic device that connects the electric power from a semitrailer to the rear of a tractor- trailer
B. A coupling device that connects a semitrailer to the rear of a tractor trailer
C. A coupling device that converts the electricity between a semitrailer and a tractor- trailer for international trucking
B
If a converter dolly has spring brakes, you release the brakes by
A. Opening the air tank petcock
B. Using the dollys parking brake control
C. Doing both of the above
B
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
A. Pull against the rear semitrailers pin
B. Drive forward, brake suddenly, and see if the rear semitrailer hits the one in front of it
C. Drive forward slowly and see if the rear semitrailer stays attached
A
To test the tractor protection valve, charge the trailer air brake system, turn off the engine, and
A. Flash your high beam headlights on and off several times
B. Keep pressing the brake pedal firmly
C. Step on and off the brake pedal several times
C
If your land gear is power operated, you should check for —— for during your walk around inspection
A. Leaks of water or gasoline
B. Dirt and grime
C. Leaks of air or hydraulic fluid
C
Coupling a triple trailer is different from coupling other combinations because
A. You couple the third trailer before you couple them to the first trailer
B. You do not have to use a converter dolly
C. You couple the second trailer and then couple them both to the tractor
A
