What is a Width Indicator Light?

[WillowAnn]

Width indicator lights are installed on vehicles to indicate the width of the vehicle, serving as a warning to other drivers and following vehicles. They are a type of commonly used light. When the width indicator light switch is turned to the first position, the small lights that illuminate at the front and rear are the width indicator lights. These lights are often found on large vehicles such as buses, coaches, and trucks, with multiple lights on each side. When lit at night, they help other drivers see the length and width of the vehicle, thereby preventing traffic accidents. When driving on the road, if you see a vehicle moving slowly, zigzagging, or with hazard lights on, it indicates that the vehicle is in need of assistance or signaling for help. Hazard lights (also known as emergency flashers) are when the turn signals flash simultaneously, serving as a warning. For example, if a vehicle breaks down and is parked on the roadside, the hazard lights should be turned on to alert passing vehicles. They are also used in special situations, such as when emergency vehicles like police cars are performing their duties.