CT CDL COMBINATION PRACTICE TEST

11. Which of the following makes a rollover more likely?
Keeping the cargo as close to the ground as possible
Keeping the load centered on your rig
Driving quickly around turns
Driving slowly around turns
12. When backing with a trailer, you should:
look at your line of travel before you begin backing.
make pull-ups to re-position your vehicle as needed.
check your mirrors on both sides frequently.
All of the above.
13. Headlights:
can blind other drivers.
must be turned on a half hour before sunset to a half hour after sunrise.
should be out of adjustment.
should not be used when driving at night.
14. If driving a new vehicle, you should familiarize yourself with the controls and equipment:
as you drive.
after pulling into a service station.
within the first 50 miles.
before you start driving.
15. If your vehicle is equipped with air brakes, loss of air pressure in the emergency line will cause:
the trailer supply valve to open.
the springs to put on the brakes.
the vehicle to slide back and forth.
the trailer emergency brakes to come on.
16. If the drive wheels start to skid:
use the brakes to slow down.
push in the clutch to let them turn freely.
accelerate slightly to regain control.
All of the above.
17. When inspecting the coupling, check that the safety latch is:
in position over the locking lever.
in the "lock" position.
pushing against the kingpin.
None of the above.
18. When the wheels of a trailer lock up, the trailer will tend to swing around. This is more likely to happen when:
the trailer is overloaded.
the trailer is empty or lightly loaded.
the trailer is fully loaded.
None of the above.
19. Tar in the road pavement rising to the road surface in very hot weather:
is very sticky and will slow down your vehicle.
causes the road to become very slippery.
does not affect the road surface or driving conditions.
might get in your engine.
20. The emergency air line does NOT:
pump air into the relay valves, allowing the trailer brakes to be applied more quickly.
control the emergency brakes on combination vehicles.
supply air to the trailer air tanks.
cause the tractor protection valve to close when the emergency line loses pressure.
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