When driving and the foot brake of the vehicle fails, what should you do?

When driving and the foot brake of the vehicle fails, what should you do?

1. I should slow down by shifting to lower gears sequentially, and when the speed decreases, use the handbrake.
2. I should turn off the engine to perform repairs.
3. I should shift from a high gear to first gear.

Correct answer

I should slow down by shifting to lower gears sequentially, and when the speed decreases, use the handbrake.

This is the correct answer for the Cambodian driving theory test. Questions are drawn from the official Ministry of Public Works and Transport sign library and road rules.