Pre- and Post-Trip Inspections Flashcards

According to FMCSA regulations, when must a driver prepare a Driver Vehicle Inspection Report (DVIR)?

Answer: Only when a defect is found on a property-carrying vehicle.

FMCSA regulation 49 CFR 396.11 requires drivers of property-carrying CMVs to complete a DVIR only if a defect or deficiency is discovered. For passenger-carrying vehicles, a DVIR must be completed daily, regardless of whether defects are found.

During an in-cab pre-trip inspection, what is the maximum allowable free play for a 20-inch steering wheel?

Answer: 2 inches

The generally accepted standard for steering wheel free play is no more than 10% of the steering wheel's diameter. For a standard 20-inch steering wheel, this equates to a maximum of 2 inches of movement before the steering mechanism engages.

A driver is performing a pre-trip inspection on the front axle. What is the minimum legal tread depth for the steer tires?

Answer: 4/32 inch

According to federal regulations, the minimum allowable tread depth for steer axle tires is 4/32 of an inch. Drive and trailer tires must have a minimum of 2/32 of an inch.

Which of the following items is NOT required to be checked as part of the post-trip inspection report mandated by 49 CFR 396.11?

Answer: Cleanliness of the cabin

FMCSA regulation 49 CFR 396.11 specifies the parts and accessories that must be inspected, including brakes, steering, lights, tires, horn, wipers, mirrors, coupling devices, wheels/rims, and emergency equipment. While a clean cab is good practice, it is not a federally mandated item on the post-trip DVIR.

During a post-trip inspection, a driver discovers a cracked leaf spring on their tractor. What is the appropriate next step?

Answer: Note the defect on the Driver Vehicle Inspection Report (DVIR).

The purpose of a post-trip inspection is to identify and report any defects that may have developed during the day. Any identified safety-critical defects, such as a cracked leaf spring, must be documented on the DVIR so the motor carrier can perform the necessary repairs before the vehicle is operated again.

What is the primary purpose of conducting a pre-trip inspection?

Answer: To identify and address any potential mechanical or safety issues before operating the vehicle.

The pre-trip inspection is a critical safety measure required by the FMCSA to confirm that a commercial vehicle is safe to operate. Its main purpose is to find and fix any problems that could cause a breakdown or an accident before the trip begins.