How can you start moving on a hill without rolling back?

When starting to move on a hill, engaging the clutch partly before releasing the brake is essential because it allows for a smooth transition from a stationary position to moving forward without rolling back. This technique is often referred to as "finding the friction point" of the clutch. When you press the clutch pedal and engage it partially, you can identify the point where the engine can start moving the vehicle without stalling. This action allows the engine power to begin moving the vehicle forward as you gradually release the brake, thus preventing any rollback that might occur if the vehicle were to be released from a complete stop on an incline.

In contrast, relying solely on the parking brake might not provide the necessary control for starting on a hill, and it may not prevent rollback once the brake is released. Fully releasing the brake pedal immediately can lead to rolling back, especially on steeper inclines, as there’s no mechanism to counteract the gravitational pull. Revving the engine to gain momentum might be effective in some scenarios but does not provide the measured control needed to start moving from a complete stop, and it could lead to excessive engine strain or tire spin.