COMBINATION TEST PENNSYLVANIA - PRACTICE TEST
11.
At passive railroad crossings, even if there are active railroad signals that indicate the tracks are clear, you must _________ to be sure it is safe to proceed.
|
go, look and put the transmission in neutral
|
|
|
listen, look and stop
|
|
|
go, stop and listen
|
|
|
stop, look, and listen
|
12.
If your ABS is not working:
|
it will slow your truck to a halt and force you to pull over.
|
|
|
you should immediately bring your vehicle to a complete stop.
|
|
|
you still have normal brake functions, and should drive and brake as you always have.
|
|
|
the drive wheels will begin to spin, and you should take your foot off the accelerator.
|
13.
When approaching a stopped bus, you must be aware that:
|
passengers may cross in front of or behind the bus.
|
|
|
a student may be driving the bus.
|
|
|
passing a stopped bus is illegal.
|
|
|
passengers crossing in front of the bus can always see you.
|
14.
ABS will:
|
not give you more control over the vehicle during braking.
|
|
|
not change your normal braking capability.
|
|
|
increase your average speed.
|
|
|
shorten your stopping distance.
|
15.
Your vehicle has hydraulic brakes. When you press the brake pedal while driving and the pedal goes to the floor, remember that:
|
shifting into neutral may help slow the vehicle.
|
|
|
the parking brake should never used to slow the vehicle.
|
|
|
pumping the brake pedal may generate enough hydraulic pressure to stop the vehicle.
|
|
|
All of the above.
|
16.
When a vehicle goes around a corner, the rear wheels:
|
follow the same path as the front wheels.
|
|
|
follow a different path than the front wheels.
|
|
|
will lock up.
|
|
|
will turn freely.
|
17.
The best way to recognize that your trailer has started to skid is:
|
by opening the window and feeling the front of the mirror.
|
|
|
by feeling the brakes come on.
|
|
|
by recognizing tire failure.
|
|
|
by seeing it in your mirrors.
|
18.
What is the emergency air line for?
|
It controls the front brakes of the tractor in case of an emergency.
|
|
|
It tells you the amount of brake pressure you need to stop the vehicle.
|
|
|
It supplies air to the trailer air tanks, and controls the emergency brakes on combination vehicles.
|
|
|
All of the above.
|
19.
The tire load rating is stated:
|
inside the suspension system.
|
|
|
on the side of each tire.
|
|
|
on the dashboard.
|
|
|
on each axle.
|
20.
If the spring brakes do not release when you push the trailer air supply control, you should:
|
rev or
lug the engine.
|
|
|
check the air line connections.
|
|
|
check the electrical cables.
|
|
|
pump the brakes.
|
GRADE ME
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More