Your vehicle can be placed out of service for:

Your vehicle can be placed out of service for:

• A. A malfunctioning Electronic Logging Device (ELD).
• B. Defects in the brake systems.
• C. Having an intoxicated driver.
• D. Both A and B.

Answer: (B)

Out-of-service rules target defects that make a vehicle unsafe to operate, and brake system defects are one of the classic, immediate reasons a vehicle must be taken out of service. Brakes are essential for stopping safely, so any defect in that system means you cannot drive until it’s repaired. An electronic logging device malfunction is a regulatory issue—you would switch to paper logs and fix or replace the device, but it isn’t listed as an automatic out-of-service vehicle condition. Having an intoxicated driver is a severe safety concern and would lead to enforcement actions against the driver, not an automatic out-of-service status for the vehicle itself.

Out-of-service rules target defects that make a vehicle unsafe to operate, and brake system defects are one of the classic, immediate reasons a vehicle must be taken out of service. Brakes are essential for stopping safely, so any defect in that system means you cannot drive until it’s repaired. An electronic logging device malfunction is a regulatory issue—you would switch to paper logs and fix or replace the device, but it isn’t listed as an automatic out-of-service vehicle condition. Having an intoxicated driver is a severe safety concern and would lead to enforcement actions against the driver, not an automatic out-of-service status for the vehicle itself.