The signal light system on a car is called the "vehicle lighting signal system". It is a set of visually communicative devices specifically designed to convey the vehicle's status and driving intentions to other road users. This system includes core components such as turn signals (commonly known as direction indicators), hazard warning lights (double flash lights), side marker lights, brake lights, and reverse lights. Turn signals are usually orange and flash when the vehicle is turning or changing lanes; they need to be turned on 3 seconds in advance to warn vehicles behind. Side marker lights indicate the vehicle's outline at night. Brake lights are red and illuminate when the brake pedal is pressed. These signal lights are not only related to driving safety but also legally required essential devices; proper use can reduce traffic accident rates by 30%. Modern vehicles are also equipped with automatic sensing functions, such as hazard warning lights automatically activating during sudden braking to enhance the warning effect.
