CDL GENERAL KNOWLEDGE TEST (IA) - PRACTICE TEST
31.
Which of the following statements about backing heavy vehicles is true?
|
Back to the right side so that you can see better.
|
|
|
Always back as quickly as possible.
|
|
|
You should avoid backing whenever you can.
|
32.
Right after it starts to rain, the road is very slippery. Why?
|
Because the water mixes with oil left on the road by vehicles.
|
|
|
Because rain is very slippery.
|
|
|
Because black ice may form on the road.
|
33.
If your vehicle gets stuck on a railroad track, you should:
|
stay in the vehicle and call for help.
|
|
|
get out of the vehicle and walk as far away from the tracks as possible.
|
|
|
try to re-start the vehicle.
|
34.
If your brakes fail while you are driving on a downgrade, you should:
|
take the least hazardous escape route you can.
|
|
|
use an escape ramp if it's available.
|
|
|
All of the above.
|
35.
Drivers should not assume that the heights posted at bridges and overpasses are correct. Why?
|
The weight of a cargo van changes its height.
|
|
|
Some roads can cause a vehicle to tilt.
|
|
|
Packed snow or repaving may have reduced the clearances since the heights were posted.
|
36.
If you smell exhaust fumes in the cab, you should:
|
remember to conduct a post-trip inspection.
|
|
|
open the windows.
|
|
|
stop immediately.
|
37.
When you're in an accident and not seriously hurt, to help any injured parties you should:
|
Keep the injured person warm.
|
|
|
Give the injured person a cold drink.
|
|
|
Get the injured person to stand up.
|
38.
When making a turn, you should cancel your turn signal:
|
once you have completed the turn.
|
|
|
once the rear end of your cab has cleared the turn.
|
|
|
once more than half of your vehicle is round the turn.
|
39.
To stay alert while driving, you should:
|
rely on caffeine.
|
|
|
avoid medications that can cause drowsiness.
|
|
|
never open the window or use the air conditioner.
|
40.
On
a tractor-trailer equipped with a trailer brake hand
valve, the hand valve can be used to:
|
keep from rolling back.
|
|
|
prevent movement of cargo.
|
|
|
hold compressed air.
|
Next page
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More