Hill descent control is a safety technology that frees the driver to steer while the vehicle’s computer actuates the anti-lock brakes and traction control to keep the vehicle moving downhill at a pre-set speed. Vehicles with off-road capability frequently feature this capability, where hill descent control can be highly effective.
Speeds range from 2 mph to 40 mph, depending on the vehicle. However, the top speed is typically less than 15 mph. Drivers may also employ hill descent control while driving in reverse. This capability is brand-dependent, and drivers should check before attempting to use the technology in that manner.
The vehicle may also use the drivetrain to slow the vehicle or deliver power, where appropriate, to control slippage. The goal is to ensure the driver remains in control of the vehicle as it heads down a steep slope. Often, manufacturers bundle this technology with other advanced driver assistance features.
More than two dozen vehicle brands offer hill descent control on more than 100 vehicles, mostly SUVs and pickup trucks. Hill descent control isn’t just for steep roads. It’s also ideal for off-road downhill driving surfaces that may be uneven or covered with debris that could compromise traction.
You can activate the technology by pressing a button, but check your owner’s manual for details, as some systems require specific conditions for engagement.
See also: What Is Self-Driving? What Is Cruise Control?
