CDL Doubles Triples Practice Test (2024)

1. When conducting a pre-trip inspection:

the inspection report should only be reviewed if you will be carrying passengers.
you should review the last vehicle inspection report.
the vehicle inspection report should not be reviewed unless your supervisor tells you to do so.

2. When you turn suddenly, which trailer is most likely to turn over?

3. In a dual air brake system, if one air system is very low on pressure:

either the front or rear brakes will not be operating fully.
you should drive and brake as you always have.
you should pump the brakes to restore pressure.

4. When the spring brakes are on, you should:

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

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

6. Which of the following is not proper tie-down equipment:

7. Headache racks:

protect you from being hit by your cargo.
can blind other drivers.
help you keep weights within legal limits.

8. If an aggressive driver confronts you, you should NOT:

9. When a combination vehicle goes around a corner:

the driver must keep the rear of your vehicle far away from the curb.
the front and rear wheels follow a different path.
the rear wheels of the trailer will never off-track.

10. You can release dolly brakes:

by opening the air tank petcock.
by closing the emergency line valve.
by opening the service line valve.

HI CDL DOUBLES TRIPLES TEST - PRACTICE TEST