Why are there no street lights on the highway

Reasons for not installing street lights on highways: 1. The cost of installing street lights on highways is high. The high cost of installing street lights on highways is easy to understand. The installation distance of street lights is generally 30 meters to 40 meters (of course, the specific distance depends on the actual situation). If a street light of 50 meters is considered, any highway in China has hundreds of kilometers. If street lights are installed, the cost of street lights is very high. An electricity bill, the cost here is astronomical. Some people will say that solar street lights can be installed' solar street lights. Yes, but the cost is also very high, coupled with the subsequent maintenance/repair, the required cost is very high. If you install street lights, highways can effectively avoid traffic accidents, and there is nothing wrong with installing street lights. But the street lamp manufacturer tells you: Not necessarily. why? Please continue to look down. Reason 2: High safety factor of expressways. Expressways are roads outside the urban areas that connect cities and cities, cities and villages, and are fully enclosed roads. There are no pedestrians and non-motorized vehicles, and street lights on urban roads are for the safety and convenience of non-motorized vehicles and pedestrians. The service functions of the two are different, so there is no need to install street lights on the whole line, only the necessary road sections, such as tunnels and death corners. Furthermore, the road surface of the expressway is very flat, there is no obvious potholes, the road conditions are maintained better, and the safety factor is higher. The third reason is that the headlights and road reflective signs are sufficient to meet the lighting needs. Street lighting is discontinuous and uneven. For drivers of high-speed vehicles, this light-dark alternation can cause visual illusions, which is very dangerous. In addition, it will quickly cause eye fatigue. Street lights are poorly illuminated and are scattered light, which will dazzle drivers in long-distance driving and cause driving safety hazards. When the outside lighting is insufficient, the vehicle headlights can provide safer lighting for the driver. Since there is no obstruction from oncoming cars, you can drive with high beams at night. The above is the reason why street lights are not installed on expressways.