When should the width indicator lights be turned on?

[DeIsla]

Width indicator lights should be turned on in environments with low visibility, such as at dawn, dusk, evening, during hazy weather, or rainy conditions. They can be used alone to alert other vehicles to determine the position and outline of the car, serving a warning function and falling under the category of signal lights. Width indicator lights, also known as contour lights, function somewhat similarly to anti-collision lights installed on the wingtips of aircraft. They are primarily used during driving at dusk, on cloudy days, or in rainy and foggy weather to indicate the width and height of the vehicle. This helps other vehicles determine their relative position and size during encounters or overtaking. Typically, the color of width indicator lights is white at the front and red at the back.