Laser light show on freeway meant to keep drivers from falling asleep (video)

To keep drivers from dozing off at the wheel, China is testing overhead signs outfitted with lasers that flash colorful beams above the vehicles.

According to Sciencegirl's post on X, "Mr. Li, the person behind the camera, reported that these laser lights designed to combat fatigue quickly revitalized him and reduced his exhaustion."

I think the signs should also be equipped with loudspeakers blaring this.