What does it mean when the cruise light is on

The cruise light being on indicates that the cruise control is activated.

Cruise control is used to maintain a constant speed for the vehicle. Once the car is set to cruise mode, the engine's fuel supply is controlled by the computer, which continuously adjusts the fuel supply based on road conditions and driving resistance to keep the car at the preset speed without the need for throttle operation, thereby reducing driver fatigue and minimizing unnecessary speed changes.

The vehicle's cruise control system (abbreviated as CCS in English) is also known as a constant speed driving system.

Cruise control uses advanced electronic technology to automatically adjust the vehicle's speed, enabling it to maintain a preset speed through an electronic control device.

When driving on highways for extended periods, activating the system's automatic control switch allows the cruise control system to automatically increase or decrease the throttle opening based on driving resistance. This eliminates the need for the driver to frequently press the accelerator pedal, ensuring the car maintains the preset speed.

During driving, the driver only needs to steer, significantly reducing fatigue and the likelihood of traffic accidents.