MS CDL DOUBLES TRIPLES TEST - PRACTICE TEST

11. A red triangle with an orange center means:
Law enforcement vehicle
Slow-moving vehicle
The vehicle is hauling hazardous materials
Liquid tanker
12. When driving trucks with trailers, drivers should:
make quick lane changes.
decrease their following distance.
push the brake pedal to the floor when braking.
avoid making sudden movements with the steering wheel.
13. The best way to recognize that your trailer has started to skid is:
by recognizing tire failure.
by seeing it in your mirrors.
by feeling the brakes come on.
by opening the window and feeling the front of the mirror.
14. When coupling, you should:
make sure the trailer wheels are not chocked.
make sure the trailer kingpin is bent.
make sure the sliding fifth-wheel is locked.
be aware that wrong coupling and uncoupling can be very dangerous.
15. Driving in very hot weather:
can increase tire pressure.
can decrease oil pressure.
can make it difficult to stay in your lane.
should never be done.
16. Over-length loads:
require special transit permits.
require special driving care.
may require special equipment such as "wide load" or flags.
All of the above.
17. ABS helps you:
lock your wheels.
decrease your overall stopping distance.
decrease your average speed.
keep the wheels from locking up.
18. If you must make an emergency stop, you should:
use the hand brake before the brake pedal.
apply the brakes as hard as you can to lock them.
brake in a way that will keep your vehicle in a straight line.
None of the above.
19. The safety valve installed in the first tank the air compressor pumps air is set to open:
if there is too little pressure.
every 15 minutes.
if there is too much pressure.
at 30 psi.
20. Your vehicle has air brakes. To stop, you should:
release the accelerator, push in the clutch, and shift to Neutral at the same time.
push the brake pedal down.
pull the parking brake control knob out.
pump the brake pedal 3 times.
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