What should be engaged when parking on a hill or slope to prevent the vehicle from rolling?

When parking on a hill or slope, engaging the parking brake is essential to prevent the vehicle from rolling. The parking brake, also known as the handbrake or emergency brake, is specifically designed to secure the vehicle when it is not in motion. This brake holds the rear wheels in place and provides the necessary resistance against gravity, especially on inclines.

In addition to engaging the parking brake, it is also recommended to turn the front wheels towards the curb (if facing downhill) or away from the curb (if facing uphill) to further prevent the vehicle from rolling away. This combination of actions enhances safety by ensuring that the vehicle remains stationary.

While the terms "emergency brake" and "hand brake" are sometimes used interchangeably with the parking brake, the most widely accepted term for standard use is "parking brake." Power brakes, which assist with regular braking, are not designed to hold the vehicle stationary when parked, making them inappropriate for this situation.