People who drive at night would know that the headlight of automobiles driven head-on offend to the eyes very much, especially when they drive on the roads where there is no street lamps, because glare are inclined to be given rise when there is high bright light in darkness. Glare refer to grievous strong light produced near high bright light source. It would probably contribute to blurred vision to the drivers. In addition, encountering glare, different drivers would take different periods of time to adapt and most of them would suffer from blind vision, as a result of which, they are hardly to see roads ahead. Then car accidents are inclined to happen, especially when cars are driven at a very fast speed.
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