Drivers know how to know geography in astronomy. However, I believe that few people know why there are no streetlights on the highway.After several days of "asking questions", I finally found the answer.

High safety coefficient of highway relative to ordinary road

The highway is the road that connects cities, cities, towns and towns, and only the model truck trailer can pass through , non-motor vehicles and pedestrians can not go on the road. This ensures the safety of traffic in some aspects. Highway conditions are relatively flat, less steep bends, steep slopes, and higher safety factor, which is one of the reasons drivers love to take the highway.

The cost is too high ,harass the people and waste money

According to unofficial introduction, the construction cost of a street lamp is nearly ten thousand yuan, and the distance between street lamps is basically kept at about 20-30 meters (too close to light, waste electricity, too far away), and the cost of building tens of thousands of kilometers of street lamps is the expense that any country can't afford.

In addition to the cost of construction, late maintenance is also a huge expenditure. Moreover, in some less developed areas, people's demand for "roads" is just needed, and street lamps have little effect on economic development.

The most important thing is that safe street lamps do not add points for safety

It says that street lighting has spacing requirements, but in fact, it is very difficult to get both fish and bear's paw. In most cases, the lighting of street lamps is not continuous and uneven. For high-speed vehicles, the continuous fast and fast alternation of light and shade will lead to visual illusion, and thus cause visual fatigue, which is very bad for traffic safety.

And the general street lighting degree is poor, the light is scattered light, will make long distance driving driver "dizzy", cause driving safety hidden danger. When the outside lighting is insufficient, the vehicle lighting group can provide safer lighting for drivers.

In fact, the high speed infrastructure department has already taken safety into account for us. Whether it is a flourishing Beijing Shanghai high speed, Beijing and Kazakhstan high speed, or the cold, Inner Mongolia Xinjiang Tibet, a few sparsely populated high-speed, each lane on both sides of the fluorescent paint spray, fluorescent strips can help drivers all weather correction route, the effect is completely better than the street lamp.