At minimum, a dual air system should build up to what psi in the primary and secondary systems?
- 75 psi.
- 100 psi.
- 90 psi.
- 80 psi.
- 60 psi.
Check your brake shoes are not ________.
- Not worn too thin.
- All of the listed answers
Every ____ miles (or every three hours, whichever comes first), you should make sure the cargo is secure.
For what offense are you able to bypass a commercial motor vehicle disqualification?
- Committing a felony involving the use of a CMV.
- Driving a CMV if your blood alcohol concentration is .04% or higher.
- There are no exemptions.
- Driving a CMV when the CDL is suspended.
How many identical placards is a vehicle transporting hazardous materials required to display?