China
From January 1, 1999, the Ministry of Public Security requires that motor vehicles must be equipped with fog lights that meet national standards. Motor vehicles that fail to install fog lights in accordance with regulations are not allowed to enter the expressway. The specific regulations are: when the visibility is between 200m and 500m, the low beam, the width indicator and the taillights must be turned on, the speed shall not exceed 80kmh, and the driving distance between the vehicle in front and the vehicle in the same lane must be maintained at least 150m; when the visibility is between 100 and 200m , The fog lights, low beam lights, width indicator lights and tail lights must be turned on, the speed shall not exceed 60kmh, and the distance from the vehicle in front shall be more than 100m; when the visibility is 50-100m, the fog lights, low beam lights, width indicator lights and The taillights should not exceed 40kmh per hour, and the distance from the vehicle ahead should be more than 50m. When the visibility is less than 50m, the public security traffic management department will take traffic control measures to close the expressway in part and all sections in accordance with the regulations.
However, there are no corresponding regulations on general roads in urban areas, because urban roads are not fast due to various traffic flows, and different speed limits on various road sections. Even if fog lights are not installed, it can be avoided as long as you drive carefully. The adverse effects of low visibility.
foreign
It is understood that the United States does not have mandatory standards for whether to install fog lights on motor vehicles. It is up to the user to decide whether to install fog lights. Fog lights are optional, and some states even prohibit the use of fog lights. Japan, which belongs to Asia with my country, does not require that vehicles must be equipped with fog lights, but decides whether to install them according to user needs. South Korea does not compulsorily install fog lights. The front fog lights are optional, and the rear fog lights do not need to be installed at all. Generally, under low visibility conditions, such as foggy, rainy, and snowy weather conditions, Korean drivers turn on the front fog lights and headlights, and turn on the warning flasher to drive slowly.
French and German vehicles belonging to the European Union must be equipped with fog lights, but they are never allowed to be used when visibility is good. This is because the red light of the fog lamp directly illuminates the eyes of people without attenuation of obstacles such as fog, rain, and snow, which will cause real damage to people. In Germany, sometimes when passing through the fog area, the driver forgets to turn off the fog lights. As long as the high beam lights flash, the car in front will turn off the fog lights interestingly.