Why is only one rear fog light on.
The rear fog light is only bright for the following reasons:
Avoid confusion: rear fog lights and width lights, brake lights are red, if you design two rear fog lights, easy to confuse with these lights. In bad weather conditions, such as foggy days, the rear car may mistake the rear fog light for the brake light due to unclear vision, which may lead to a rear-end collision. Therefore, designing a rear fog light can reduce this confusion and improve driving safety.
According to Article 38 of the United Nations Economic Commission for Europe Motor Vehicle Regulation, most EU countries allow one or two rear fog lights. In China, there are also relevant regulations that only one rear fog lamp can be installed, and it must be installed on the left side of the driving direction.
Cost savings: Although this is not the main reason, designing one rear fog lamp can save some costs compared to designing two rear fog lamps. For car manufacturers, this can reduce production costs to a certain extent.
In general, only one rear fog light is mainly to avoid confusion with other lights, improve driving safety, and comply with relevant regulations. At the same time, it can also save manufacturing costs to a certain extent.
The difference between rear and front fog lights
The main difference between rear and front fog lights is their color, installation position, switch display symbol, and function.
Different colors: Front fog lights are usually bright yellow, while rear fog lights are red. This color choice is based on the penetration of red and yellow in the fog. Red is the longest wavelength of visible light, with better penetration, so the rear fog light uses red to remind the rear vehicle; The yellow light has strong penetration and is used for front fog lights to improve the visibility of drivers and surrounding traffic participants.
The installation position is different: the front fog light is installed in the front of the car to illuminate the road in rainy or windy weather, and the rear fog light is installed in the rear of the car to help the rear vehicle find your vehicle more easily.
The switch display symbol is different: the switch identifier of the front fog lamp is a light bulb with three slanted lines towards the bottom left, while the switch of the rear fog lamp is a light bulb with three slanted lines towards the bottom right.
Different functions: Front fog lights are mainly used to improve road lighting in fog, snow, rain or dust, so that oncoming vehicles and pedestrians can find each other across the space, thereby improving driving safety. The rear fog light is used as a warning, in the rain and fog weather to remind the car, do not need to provide lighting.
In addition, the ICONS of the front and rear fog lights are also different on the instrument console, with the light line of the front fog light icon pointing downward and the rear fog light being parallel. This design helps the driver to quickly identify and operate on the dashboard.
What is the effect of fog lights
Improve visibility in front of the driver
When the fog lights are turned on, the main effect is to improve the visibility in front of the driver. Fog lights are divided into front fog lights and rear fog lights, of which the light penetration of the front fog light is particularly strong, can effectively illuminate the road ahead, help the driver to see the front situation in rain and fog weather, so as to ensure driving safety. In addition, fog lights can also improve the visibility of the vehicle, especially in foggy days, due to the absorption of light, line-of sight is shorter, turning on fog lights can increase the brightness of the vehicle, making it easier for other vehicles and pedestrians to find your vehicle, thus reducing the occurrence of accidents.
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