FREE ND CDL Doubles Triples Practice Test (2024)

1. Air tank drains:

protect the tanks and the rest of the system from too much pressure.
should not be used in wet weather.
are used to move air to the brakes.
are used to remove water and oil from the air tanks.

2. After starting the engine, the ABS light stays on. This means:

the ABS is not working properly.
the ABS is working properly.
the ABS oil level is not adequate.
the ABS is in Neutral.

3. 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.
None of the above.

4. If a load is 10 feet long, the minimum number of tie-downs required is:

5. No matter how small the cargo is, it should have at least:

6. In newer vehicles with air brakes, you put on the parking brake:

using a diamond-shaped, yellow, push-pull control knob.
moving the orange push-pull lever to the right.
placing the transmission in Park.
using a P-shaped, yellow control knob.

7. As you approach off ramps and on ramps, remember:

that the posted speed limit may not be safe for larger vehicles.
to maintain your highway speed.
to always brake and turn at the same time.
that downgrades make it easier to reduce speed.

8. You are driving a vehicle with air brakes when the low air pressure warning light and buzzer come on. You should:

apply the brakes as hard as you can.
activate your hazard lights and drive to the nearest place where you can stop.
pull off the road and stop immediately.
slow down and test your brakes.

9. To know if your vehicle is equipped with ABS, look for:

a yellow ABS malfunction lamps on the instrument panel.
an ABS placard.
the ABS logo on the steering wheel.
the ABS shipping paper.

10. Air storage tanks:

are installed in the first tank the air compressor pumps air to.
pump air into the air storage tanks.
use parts of the service brake systems to stop the vehicle in a brake system failure.
hold compressed air for the brakes.

NORTH DAKOTA DOUBLES TRIPLES PRACTICE CDL TEST