Solar street lamp refers to the lamps that provide lighting function for the road. Solar street lights can be seen everywhere, but only on the highway is not visible. Why? Not afraid of traffic accidents? What is the reason?

The first reason is the high cost of installing streetlights on expressways

It is easy to understand the high cost of installing street lamps on expressways. The installation distance of street lamps is generally 30-40 meters (of course, the specific distance depends on the actual situation). If you count a street lamp at 50 meters, there are hundreds of kilometers in any Expressway in China. If you install street lamps, the cost of street lamps is very high. The cost of electricity is astronomical. Some people will say that solar street lamps can be installed. Yes, it can, but the cost is also very high. In addition, the cost of later maintenance / repair is very high.

The second reason is that the safety factor of expressway is high

Expressway is a closed road connecting cities. There are no pedestrians and non motor vehicles. The urban street lights are designed for the safety and convenience of non motor vehicles and pedestrians. The service functions of the two are different, so there is no need to set street lights all the time, just necessary parts, such as tunnels and death curves. In addition, the road surface is smooth, there is no obvious tunnel, the road condition is good, and the safety factor is high.

The third reason is that the front lights and reflective signs on the road are enough to meet the lighting requirements

Solar street lighting is discontinuous and uneven. For drivers of high-speed vehicles, this alternating light and dark will cause visual illusion, which is very dangerous. In addition, it can quickly cause eye fatigue. The illumination of street lamp is poor, and it is scattered light, which will dazzle the driver in the long-distance driving, and cause the hidden danger of driving safety. When the external lighting is insufficient, the vehicle headlight can provide safer lighting for the driver. Because there is no opposite vehicle barrier, you can drive with high beam at night.

So to sum up, it is neither scientific nor safe to install solar street lamps on high speed.