CDL Doubles/Triples Test (2024) - FREE ID CDL Practice Test

1. When the temperature drops:

bridges will not freeze.
bridges will freeze before the road will.
bridges usually freeze after other parts of the roadway.

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

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

4. When you turn suddenly while pulling doubles, which trailer is most likely to turn over?

All trailers are equally likely to turn over.
The rear trailer is twice as likely to turn over as the tractor.
The front trailer is twice as likely to turn over as the tractor.

5. Engine oil pressure should come up to normal within _________ after the engine is started.

6. With low beams, drivers can see ahead about:

7. You must have at least 4/32 inch tread depth in every major groove on front tires and at least ___ inch on other tires.

8. Combination vehicles have __ air lines.

9. If your brakes fail on a steep mountain downgrade, you should:

leave the road immediately.
use an escape ramp if it is available.
go right if the shoulder is clear.

10. Doubles and triples:

can't be turned suddenly.
can be stopped suddenly due to their weight.
can be turned suddently due to the low center of gravity.

CDL DOUBLES PRACTICE TEST IDAHO