What does the hill start assist in a car mean?

[SanEmmett]

The hill start assist in a car refers to a feature that temporarily applies braking force to all four wheels to prevent the vehicle from rolling backward when starting on an uphill slope, thereby addressing the difficulty of starting on an incline. Without hill start assist control, the driver must quickly and accurately switch from the brake pedal to the accelerator pedal. With hill start assist control, it prevents the vehicle from rolling backward, allowing the driver to start the car easily and operate the pedals with ease. The method for starting an automatic transmission car on an uphill slope is: 1. Press the brake pedal while pulling up the handbrake; 2. Shift the gear to L (Low) or S (Sport) mode and gradually apply the accelerator; 3. When the car's forward momentum is held back by the handbrake, slowly release the handbrake, and the vehicle will begin to climb the slope smoothly.