What is the purpose of installing laser lights on highways?

[Nicole]

The green laser lights installed on highways are anti-fatigue laser lights, designed to remind drivers to stay alert and avoid drowsy driving. Anti-fatigue laser emitters have a long projection distance and, under low visibility conditions at night or in certain weather, provide a certain level of visual impact to drivers. At night, the laser emitters automatically activate, emitting strobe-like green laser beams that form a laser belt to remind drivers to drive safely. Laser emitters can only temporarily keep drivers awake through visual impact. The most reliable and effective way to alleviate driving fatigue is to stop and rest. Additionally, during nighttime or in low-visibility conditions such as rain or fog, if sudden accidents or traffic congestion occur, when police are investigating accidents or issuing warnings at the end of a traffic jam without ensuring their own safety, 'the laser emitters installed on police vehicles can warn passing drivers from a distance, allowing them to anticipate road conditions in advance and take measures such as slowing down or yielding.