What is the purpose of green lasers on highways?
2 Answers
Green lasers on highways are anti-fatigue laser lights that illuminate at night to prevent drivers from drowsy driving. Here are some precautions for highway driving: 1. Maintenance: Before driving on the highway, conduct a comprehensive inspection of your vehicle, especially checking the tire pressure and brake discs. Additionally, inspect the engine before entering the highway; it's best to perform a full vehicle maintenance. 2. Safety: Always prioritize your safety, so be mindful of certain taboos while driving. It's advisable to keep a safe distance from large trucks, especially if they are carrying cargo, as they can obstruct your view and make it difficult to assess road conditions. 3. Habits: Develop good safety habits, such as always wearing a seatbelt. When driving on the highway, sudden braking may be necessary in emergencies. Without a seatbelt, the inertia of the car could throw you forward.
That night when I was driving home on the mountain highway, I saw green laser beams flashing across the road. At first, I thought it was aliens, but later a traffic police friend told me it was an anti-fatigue device. Installed in certain accident-prone sections, the laser is hidden in the roadside guardrail, aimed at the lane position. Green is used because it's noticeable in the dark without being harsh. It detects abnormal vehicle speed and trajectory, such as when a drowsy driver drifts out of the lane, and automatically triggers the beam to remind you to stay focused. This device is common on southern mountain roads and is said to be quite effective. Combined with speed bumps and surveillance cameras, it can significantly reduce collisions. Of course, don’t rely on it entirely—on long drives, you should still take regular breaks, drink water, and stretch. Remember, safety is paramount. These little technological gadgets nowadays really give peace of mind.
