CO CDL Practice Test (2023) - FREE CDL Knowledge Test

1. Drivers should watch out for black ice when the temperature is ______ freezing and the road looks ______.

2. When approaching and driving through a work zone, you should:

use your 4-way emergency flashers or brake lights to warn drivers behind you.
observe the posted speed limits.
slow down.
All of the above.

3. You should be especially alert for drunk drivers:

4. Empty trucks require greater stopping distances. True or False?

False.
True, but only on wet surfaces.
False, but only for trucks built on or after March 1, 1998.
True.

5. Anti-lock brakes:

reduce the perception distance.
increase your stopping distance.
help you stop faster.
keep your brakes from locking up when you brake hard.

6. CMV drivers who are convicted of a second DUI offense will lose their CDL driving privileges for:

7. To correct a drive-wheel braking skid, you should:

stop braking and countersteer.
release the clutch and press the accelerator at the same time, then countersteer.
fully apply the brakes until you stop.
steer into the skid.

8. Which of the following statements about tire failure is true?

If the steering feels heavy, it may be a sign one of the rear tires has failed.
It can take a few seconds for your vehicle to react, and you might think it was some other vehicle.
Any time you hear a tire blow, you would be safest to assume it is not yours.
All of the above.

9. In coming down steep downgrades, you should:

select an appropriate speed.
go slowly enough so your brakes don't get too hot.
use a low gear.
All of the above.

10. The air storage tanks:

are used to hold compressed air.
protects the tank and the rest of the system from too much pressure.
stop the compressor from pumping air.
are connected to the engine through gears or a v-belt.

COLORADO CDL PRACTICE TEST - GENERAL KNOWLEDGE