Who must guarantee that brakes are correctly adjusted?
- The mechanic.
- The vehicle manufacturer.
- The passenger.
- The driver. ✓
Answer: D. The driver.
The driver must make sure the brakes are correctly adjusted before the trip.
Why this is the answer
The handbook discusses out-of-adjustment air brakes in the daily trip inspection for classes A and D. It says out-of-adjustment air brakes are unsafe and can lead to the vehicle being detained and CVOR action. It also notes that you cannot adjust your own air brakes unless you have completed an approved air brake adjustment course or are a certified mechanic. Read together, the driver is responsible for catching the problem during the daily inspection and having the adjustment done by someone qualified.
Why the other answers are wrong
- A. The mechanic. — A certified mechanic may adjust air brakes, but the passage places the daily inspection responsibility on the driver, not the mechanic.
- B. The vehicle manufacturer. — The handbook does not assign responsibility for brake adjustment to the vehicle manufacturer.
- C. The passenger. — Passengers have no role in inspecting or adjusting brakes according to the passage.
Remember it
During your walk-around, treat an out-of-adjustment brake as a no-go item and arrange adjustment by a qualified person.
Official handbook: Official MTO Truck Handbook, Daily trip inspection — classes A and D