In China, long-range lasers have been installed on some highways, the main purpose of which is to prevent drivers from falling asleep at the wheel.
These lasers are located above the road and are turned on only at night. They project colored beams up to 2 km away, which are above the roads and do not blind drivers.
At this level, it is enough for a person to see them. How effective this system is, it is difficult to say yet.
Some users believe that it can actually help get rid of drowsiness and sleepiness on the road. Others believe that lasers slow down and disorient drivers, thereby creating a great danger for them.
At the same time, it creates the impression that you are driving in a computer game, for example, like in Mario Kart. [Today Online]
Source: Iphones RU
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