FMCSA Vehicle Maintenance and Inspection Requirements 2

Question 1

Which document must accompany a CMV that has passed its annual periodic inspection?

Accepted Answer

An inspection report or decal showing the inspection date

Answer

An inspection report or a decal must be kept on the vehicle as evidence it passed its most recent annual periodic inspection.

Question 2

What is the maximum allowable brake lining thickness for a drum brake before it is considered defective?

Accepted Answer

Less than 1/4 inch at the thinnest point

Answer

Brake lining worn to less than 1/4 inch at the thinnest point is an out-of-service criterion under FMCSA rules.

Question 3

Under FMCSA rules, a DVIR that shows no defects must be signed by:

Accepted Answer

The driver only

Answer

Even when no defects are found, the driver must sign the DVIR to certify the vehicle was inspected and found to be in satisfactory condition.

Question 4

What is the FMCSA-required minimum tire pressure for CMV tires?

Accepted Answer

There is no federal minimum — manufacturer spec applies

Answer

FMCSA does not set a specific minimum psi; tires must be inflated to the manufacturer's recommended pressure per 49 CFR 393.75.

Question 5

Which lighting defect would result in an out-of-service order for a CMV?

Accepted Answer

Required headlamp inoperative

Answer

An inoperative required headlamp is a Federal Out-of-Service criterion because it directly compromises safety.

FMCSA - Federal Motor Carrier Safety Administration Practice Test