RHODE ISLAND CDL COMBINATION PRACTICE TEST

11. When going down grades, you should:
shift up.
downshift to a lower gear.
put the transmission in Neutral.
12. _________ rigs are much more likely to roll over in an accident than _________ rigs.
Fully loaded ; overloaded
Fully loaded ; empty
Empty ; fully loaded
13. To prevent a rollover, the driver should:
drive slowly around corners, on ramps, and off ramps.
make quick lane changes if possible.
drive on the shoulder if possible.
14. On a tractor-trailer equipped with a trailer brake hand valve, the hand valve can be used to:
hold compressed air.
prevent movement of cargo.
keep from rolling back.
15. ABS:
should only be used on dry roads.
is an addition to your normal brakes.
allows you to brake harder.
16. The best way to recognize that your trailer has started to skid is:
by using retarders.
by hearing squeaking noises from the wheels.
by seeing it in your mirrors.
17. Fully loaded rigs:
are less likely to roll over than empty rigs.
are just as likely to roll over as empty rigs.
are much more likely to roll over than empty rigs.
18. You are coupling a tractor to a semi-trailer. You have backed up but are not yet under the trailer. Before backing under the semi-trailer, you should:
supply air to the trailer system and lock the trailer brakes.
connect the electrical cord and check the air lines.
begin raising the landing gear.
19. If driving a new vehicle, you should familiarize yourself with the controls and equipment:
within the first 50 miles.
before you start driving.
as you drive.
20. Which of the following is true about the trailer hand valve?
It should be used only to test the trailer brakes.
The trailer hand valve works the trailer brakes.
All of the above.
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