OH CDL DOUBLES TRIPLES TEST - PRACTICE TEST
11.
Emergency brakes are:
|
required on all vehicles.
|
|
|
not required on buses.
|
|
|
not required on doubles.
|
12.
Hydroplaning:
|
is less likely if tire pressure is low.
|
|
|
can occur only if there is a lot of water on the road.
|
|
|
can occur at speeds as low as 30 mph.
|
13.
Many large vehicles have convex (curved, "spot, "fisheye") mirrors. Convex mirrors:
|
misrepresent reality by showing a larger area than flat mirrors.
|
|
|
are illegal in most states.
|
|
|
make things look smaller and farther away than they really are.
|
14.
During a walk around inspection of a double or triple trailer, make sure that the converter dolly air tank drain valve is _____ and the glad hands are ______.
|
open; properly connected
|
|
|
closed; properly connected
|
|
|
open; not connected
|
15.
In vehicles with air brakes, the two markings on a front brake limiting valve are:
|
left and right.
|
|
|
normal and slippery.
|
|
|
high and low.
|
16.
If your trucks has a high center of gravity, which of the following is true for curves?
|
Reduce your speed to a crawl.
|
|
|
You should slow down, as your truck can roll over at the posted speed limit for the curve.
|
|
|
You should travel at the posted speed limit.
|
17.
If your brakes fail on a steep mountain downgrade, you should:
|
stay on the road and keep looking for the next available escape ramp.
|
|
|
decide what to do as soon as you know your brakes do not work.
|
|
|
slow down until your vehicle comes to a complete stop.
|
18.
When the trailer breaks away or develops a bad leak, the tractor protection valve will close automatically and:
|
the tractor will lose all air pressure.
|
|
|
the trailer emergency brakes will come on.
|
|
|
the trailer supply valve will stay open.
|
19.
When driving a double or triple, you should:
|
decrease your following distance.
|
|
|
drive in the left lane whenever possible.
|
|
|
increase your following distance.
|
20.
If you are caught in strong winds, you should:
|
keep a strong grip on the steering wheel and slow down or pull off the roadway.
|
|
|
speed up while keeping a strong grip on the steering wheel.
|
|
|
immediately take your foot off the accelerator.
|
GRADE ME
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More