China Tests Highway Lasers on Qingdao-Yinchuan Expressway to Fight Driver Fatigue China has installed colorful laser projectors along the nearly 1,000-mile Qingdao-Yinchuan Expressway to combat highway hypnosis and keep tired drivers alert at night. Officials in China have installed high-powered, colorful laser projectors along stretches of the nearly 1,000-mile Qingdao-Yinchuan Expressway to combat highway hypnosis and keep fatigued drivers alert at night. The overhead platforms fire intensely colorful light beams across the sky above traveling vehicles when darkness falls, turning remote highway sections into a spectacle resembling a rave or the Rainbow Road level of Mario Kart. Highway hypnosis is a serious hazard that can quickly lead to collisions. It is difficult to beat even with energy drinks or cold air from an open window. The new laser system aims to interrupt the monotony of long night drives and shock tired brains back into gear so drowsy drivers do not drift off.How the Highway Laser System WorksEngineers mounted the projectors on existing steel sign platforms and angled the lasers upward into the sky rather than directly at windshields. This creates an overhead display of flashing neon red, cyan, and electric green ribbons that streak above the road in pulsating waves.The science behind the experiment hinges on breaking the sensory deprivation that causes highway hypnosis. Staring at an unchanging asphalt void for hours can lull the brain into standby mode. Authorities believe pulses of atmospheric lighting can trigger a quick jolt of alertness and prompt drivers to focus on new information.China's road authorities are not turning every highway into a permanent light show. The laser setup currently operates only in notorious danger zones, such as long straightaways where drivers are most prone to zoning out or crashing. The lasers are also turned on intermittently so the visuals stay startling and novel, preventing the brain from getting used to them and tuning them out.Safety Concerns and Lack of Crash DataWhile dashcam clips of the futuristic neon expressway look undeniably cool, traffic safety advocates are not convinced the system actually helps drivers. The main issue is a glaring lack of hard, empirical crash data proving that the lasers save lives over time. Whether these pulsating, colorful lasers can lower the number of late-night collisions remains unproven by independent peer-reviewed studies.One of the biggest criticisms is that the lasers might introduce an entirely new hazard by distracting drivers. A disoriented, sleepy driver suddenly confronted by bright magenta streaks might hit the brakes in a panic or fixate on the sky instead of the semi-truck ahead. Social media users have raised concerns about risks to motorists with astigmatism and epilepsy, along with the lasers being a distraction in general.Innovation Versus Gimmick on Chinese RoadsUntil metrics from comprehensive studies are published showing that this colorful experiment reduces fatal wrecks, the project sits in an awkward gray area between innovation and reckless gimmick. Creativity is often a good way to find a functional solution to problems that affect drivers around the globe.However, turning public transit arteries into an open-air laser show might end up solving one problem only to replace it with another. The debate over the Qingdao-Yinchuan Expressway lasers reflects a broader question about how far authorities should go to keep drivers awake without creating new dangers on the road.