Why Does an Automatic Car Roll Forward When in Reverse Gear?

[DeDelilah]

"The reasons for an automatic transmission car rolling forward when in reverse gear include not engaging the handbrake when shifting gears and incorrect use of the auto-hold function. Not engaging the handbrake when shifting gears: During high-speed driving, the handbrake should not be used as a substitute for the foot brake. The handbrake primarily controls the rear wheels, and applying it during high-speed driving can easily lead to a rollover. When stuck in traffic on a slope, do not forget to engage the handbrake, as this can prevent the car from rolling. Driving without releasing the handbrake can cause significant brake wear, leading to reduced braking performance. When parking, shifting into P (Park) can prevent the car from rolling. Incorrect use of the auto-hold function: The auto-hold function has a limited duration on slopes, typically two seconds. After releasing the brake pedal, it is necessary to apply the throttle promptly to avoid the risk of rolling. The auto-hold function operates correctly only when the seatbelt is fastened and the doors are closed. When parking, simply engage the handbrake, shift into P (Park), and lock the car; there is no need to worry about whether the auto-hold function is activated."