Yufai: Why are street lights not used on highways?

Why don’t highways use street lights? Generally, highways are not equipped with street lights except for important bridge decks, tunnels, and upper and lower highway intersections. However, there are street lights on ordinary urban roads, but there are no street lights on highways driving at high speeds? This is why, Yuhui Aurora Solar street light supplier analyzes for you mainly for the following two reasons:

There are two reasons for the following：

1. The highway is long and the traffic flow is too random. The installation of street lights for the passage of a small number of vehicles will inevitably cause huge energy waste;

2. The illumination distance of street lights is limited. The general street lamp spacing of urban arterial roads is about 30-33 meters, the brightest point is under the light poles, and the center point between the two light poles is the darkest point. If the highway is set according to the mode of urban arterial roads, street lights , Assuming that when driving at a speed of 120 kilometers per second, the distance traveled by the vehicle is 33.3 meters per second. Into the eyes, it is easy to produce visual fatigue;

Therefore, if street lights are installed on the highway, it is neither energy-saving nor scientific.

When a car is driving on a highway, the lighting mainly depends on the headlights of the vehicle itself, and the lighting of its own headlights is continuous. In addition, the highway has contour markings every 25 meters on both sides of the guardrail, and high reflectance on the road surface. Effect markings and reflective road studs, as long as the headlights are turned on at night, the highway reflective effect is very good. Lights on the road will affect the effect of high-reflective markings and reflective road studs.

Of course, some few expressways will install some high pole lights for auxiliary lighting on important bridge decks (cross-sea bridges), overpasses or ramps. At the same time, these road sections often drive at speed limits.

Author: Yufai
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