Who must guarantee that brakes are correctly adjusted?
- The passenger.
- The vehicle manufacturer.
- The driver. ✓
- The mechanic.
Answer: C. The driver.
The driver must guarantee that the brakes are correctly adjusted.
Why this is the answer
The handbook says federal and provincial law requires you to check manual and automatic slack adjusters every day during the pre-trip inspection, and it puts the responsibility on you as the professional driver to make sure the vehicle has safe, correctly adjusted brakes. The law also requires a brake check before driving down steep grades marked with regulatory signs. Nothing in the passages hands this duty to a passenger, the manufacturer or a mechanic.
Why the other answers are wrong
- A. The passenger. — A passenger has no role in inspecting or adjusting the vehicle's brakes; the handbook places that job on the professional driver.
- B. The vehicle manufacturer. — The manufacturer builds the vehicle, but the passages never say the manufacturer is responsible for keeping the brakes adjusted once it is on the road.
- D. The mechanic. — A mechanic may do repair work, but the passages say the driver is the one required by law to check brake adjustment daily and before steep downgrades.
Remember it
Picture the pre-trip walk-around: the person holding the keys is the person answerable for brake adjustment.