Why Are There No Street Lights On Highways
2022-07-20
VIEW "5837
Road lighting is very important for driving at night, so why are city roads illuminated but highways not? With the exception of important bridge decks and tunnels, highways are not usually illuminated.
1.Cost reasons:
If one street lamp is installed every 50 meters of urban road, the cost from installation to use and maintenance will be astronomical. Besides, the traffic flow of expressways is different from that of cities, and a large number of sections are often in the state of sparse traffic flow, and are far from the bustling urban areas. If long-term lighting, it will also cause a huge waste of resources. In addition, the road traverses the states and provinces, and the segmented power supply and management of the sections is also a thorny issue.
2. Impact on safety:
If streetlights are installed on expressways, the illumination effect of one light and one dark light will affect drivers' driving and form visual fatigue. In addition, the lighting of the whole road will make drivers subconsciously lose their vigilance, which is not conducive to long-term concentration driving.
In addition, vehicles that are allowed on the highway are equipped with their own lighting, which is enough to help drivers see things around them. Secondly, since the lighting effect of street lamps is not uniform, the visual error of alternating light and dark is particularly easy to cause visual fatigue in the driving process. If street lamps are installed on expressways, it will bury hidden safety risks.
3. Reflective system for protection:
There are perfect reflective marking systems on the highway, including hot-melt reflective marking line (lane line, etc.), film reflective contour marking (isolation belt, guardrail, etc.), luminous nail, etc., they can reflect the lane indication line, traffic signs, roadside contour, lane dividing line and central separation belt contour. So at night, as soon as the driver turns on his headlights, these reflective systems come into play, providing real-time guidance.