DOT DOT Out-of-Service Criteria & Enforcement

Question 1

Which organization publishes the North American Standard Out-of-Service Criteria (OOSC) used by DOT inspectors?

Accepted Answer

Commercial Vehicle Safety Alliance (CVSA)

Answer

CVSA publishes and updates the North American Standard Out-of-Service Criteria, which are adopted by FMCSA and used as the enforcement standard for roadside inspections.

Question 2

What does placing a vehicle 'out of service' (OOS) mean during a DOT roadside inspection?

Accepted Answer

The vehicle is prohibited from operating until the identified defect is corrected

Answer

An OOS declaration prohibits further operation of the vehicle until the defect cited under the out-of-service criteria has been repaired and verified.

Question 3

Under CVSA criteria, a driver placed out of service for an hours-of-service violation may NOT resume driving until:

Accepted Answer

The driver has accumulated enough off-duty time to be back in compliance

Answer

A driver placed OOS for hours-of-service violations must accumulate the required off-duty rest time before legally resuming driving.

Question 4

Which brake defect condition would place a vehicle out of service under CVSA criteria?

Accepted Answer

More than 20% of the vehicle's brakes are defective or out of adjustment on vehicles with fewer than 6 braking units

Answer

CVSA criteria place a vehicle OOS when more than 20% of its service brakes are defective, including being out of adjustment, for vehicles with fewer than 6 braking units.

Question 5

Which tire condition is an automatic out-of-service defect under CVSA criteria?

Accepted Answer

A front steering axle tire with a tread depth below 4/32 inch

Answer

CVSA criteria require OOS for any front steering axle tire with tread depth less than 4/32 inch, while drive and trailer axle tires require at least 2/32 inch.

DOT Inspector Certification Practice Test

DOT Inspector Certification Practice Test

DOT DOT Out-of-Service Criteria & Enforcement