What does HDC mean in cars?

[LillianMarie]

HDC is defined as follows: 1. HDC is called the Hill Descent Control system, also known as the slope control system. HDC allows the driver to smoothly pass through steep downhill sections without stepping on the brake pedal while maintaining full control. As needed, the braking system automatically controls each wheel to move forward slightly faster than walking speed, allowing the driver to focus entirely on steering. 2. When the vehicle is driving downhill, if the speed is too fast, the HDC switch can be pressed to force the vehicle to descend slowly, eliminating the need to constantly apply the brakes during descent.