Save Time and Get a Pass Guarantee! LIMITED-TIME OFFER: Get CDL PREMIUM Now and SAVE $65!Upgrade To Premium

DOUBLES TRIPLES TEST MT - CDL PRACTICE TEST

11. The trolley valve should be used only:

in driving.
in an emergency.
to test the trailer brakes.
to prevent skids.

12. When driving a double or triple, you should:

drive in the left lane whenever possible.
decrease your following distance.
drive with emergency flashers on.
increase your following distance.

13. When you make a quick lane change, the crack-the-whip effect can turn the trailer over. The crack-the-whip effect is caused by:

rearward amplification.
the rear trailer of a triple.
strong wind.
worn tire tread.

14. When you see you will need to slow down, you can warn drivers behind you by:

turning on the right turn signal.
slamming on the brakes.
making gestures.
tapping the brakes a few times.

15. Large vehicles take longer to stop when they are:

empty.
fully loaded.
carrying hazardous materials.
heavily loaded but not fully loaded.

16. The earliest way to recognize that your trailer has started to skid is:

by releasing the brakes.
by hearing squeaking noises from the wheels.
by checking your mirrors.
by checking the jackknife sensor.

17. If the drive wheels start to skid:

push in the clutch to let them turn freely.
use the brakes to slow down.
accelerate slightly to regain control.
All of the above.

18. Foundation brakes are used:

at each wheel.
only with the right wheels.
only with the rear wheels.
only with the front wheels.

19. When your vehicle starts to skid, you must take action to:

use stab braking.
use controlled braking.
accelerate and countersteer.
restore traction to the tires.

20. If the engine catches fire, you should:

turn off the engine as soon as you can.
avoid shooting foam from the vehicle's underside.
open the hood as soon as you can.
pull into a service station and notify the emergency services.

NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More