DOUBLES TRIPLES TEST TX - CDL PRACTICE TEST
11.
When the wheels of a trailer lock up:
|
the trailer will tend to swing around.
|
|
|
ABS will increase stopping power.
|
|
|
the vehicle will gradually come to a complete stop.
|
|
|
All of the above.
|
12.
If the drive wheels begin to spin, you should:
|
take your foot off the accelerator.
|
|
|
wait 4-5 seconds before applying the accelerator.
|
|
|
apply your brakes all the way.
|
|
|
accelerate smoothly and change gears as necessary.
|
13.
You are driving a vehicle with air brakes when the low air pressure warning light and buzzer come on. You should:
|
pull off the road and stop immediately.
|
|
|
apply the brakes as hard as you can.
|
|
|
activate your hazard lights and drive to the nearest place where you can stop.
|
|
|
slow down and test your brakes.
|
14.
When driving a double or triple:
|
the lighter trailer should be directly behind the tractor.
|
|
|
all trailers should have the same weight.
|
|
|
the more heavily loaded trailer should be in the rear.
|
|
|
the more heavily loaded trailer should be directly behind the tractor.
|
15.
If you must stop on a one-way or divided highway, you should place warning devices _______ toward the approaching traffic.
|
3, 15 and 45 feet
|
|
|
5, 50 and 500 feet
|
|
|
5, 25 and 50 feet
|
|
|
10, 100 and 200 feet
|
16.
An alcohol evaporator:
|
to hold compressed air.
|
|
|
protects the air brake system from too much pressure.
|
|
|
is used to reduce the risk of ice in air brake valves and other parts during cold weather.
|
|
|
used to reduce the chance of the front wheels skidding.
|
17.
To avoid becoming an aggressive driver you should:
|
give other drivers your full attention.
|
|
|
make gestures to other drivers.
|
|
|
speed up if you think you’re going to be late.
|
|
|
give other drivers the benefit of the doubt.
|
18.
Why should you back toward the driver's side?
|
Using double clutching requires practice.
|
|
|
You can see better and watch the rear of your vehicle by looking out the side window.
|
|
|
You can more easily correct any steering errors.
|
|
|
All of the above.
|
19.
The center of gravity of a trailer should be:
|
at the rear of the trailer.
|
|
|
as high as possible.
|
|
|
at the front of the trailer.
|
|
|
as low as possible.
|
20.
On dry pavement, the braking distance when traveling at 55 mph is about:
|
216 feet.
|
|
|
142 feet.
|
|
|
419 feet.
|
|
|
61 feet.
|
GRADE ME
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More