What Causes the Vehicle to Roll Backward When Starting on a Slope?
2 Answers
Rolling backward occurs because releasing the clutch results in insufficient vehicle power. At this moment, if the brake is also released, the combined effects of gravity and the slope exert a downward and backward force on the vehicle, causing it to roll backward. Related Information: 1. Meaning of Starting on a Slope: It refers to starting a vehicle parked on a steep slope. Starting on a slope is part of the driving test in Subject 2 of the license examination. 2. Precautions: Maintain the correct driving posture, master the timing of releasing the handbrake, control the clutch release properly, ensure the correct sequence of operations, stay relaxed, and avoid excessive tension.
When I first started driving, I often experienced rollback during hill starts, mainly due to improper operation—like releasing the clutch pedal too quickly with my left foot or not applying enough throttle with my right foot. During a hill start, the car's weight shifts backward, and if the engine power isn't sufficient to drive the wheels, the car will roll back. New drivers, especially, tend to get nervous and release the brake before stabilizing the clutch. I recommend practicing starts on flat ground first, finding the biting point where the car vibrates, then gradually moving to small inclines. Using the handbrake for assistance can also help—apply some throttle with your right foot and only release the handbrake when the car starts moving forward, which reduces the risk of rollback. With more practice, it'll become smoother. Don't worry about mistakes; everyone starts this way.