What is the green laser on the highway?

[JosephineLee]

Highway green lasers are anti-fatigue laser lights designed to remind drivers to stay alert and avoid drowsy driving at night. These anti-fatigue laser lights are typically installed on straight road sections prone to fatigue-induced driving, with a beam range of up to 2 kilometers, effectively stimulating the driver's brain to counteract fatigue. Due to the relatively enclosed and monotonous environment of highways, along with uniform visual stimuli during night driving, prolonged driving can easily lead to fatigue or loss of concentration, increasing the risk of traffic accidents. In such scenarios, laser lights play a crucial role by utilizing changing light patterns and stimulation to alleviate visual fatigue and serve as a warning mechanism. However, it's important to note that laser emitters only provide temporary alertness through visual impact. The safest and most effective way to relieve driving fatigue is to pull over and take a proper rest.