@howitworkssss: China has introduced anti-fatigue laser light systems on certain highways to help keep drivers alert during nighttime travel. These devices project bright, moving beams of colored light above or alongside the roadway, creating a visual stimulus that can help reduce drowsiness and maintain driver attention. The system is designed as an additional safety measure, particularly on long stretches of road where fatigue-related accidents are more likely to occur. While not a substitute for proper rest, the technology aims to improve road safety by encouraging drivers to remain focused and alert at night.