To adapt to driverless scenarios, foreign experts propose adding white traffic lights
2024-08-12
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According to the British newspaper Metro, the red, yellow and green traffic lights are almost the same all over the world and have existed for more than a century. Recently, foreign scientists have proposed that traffic lights may have a fourth color in the future, suitable for driverless car scenarios.In California and Arizona, Waymo, a driverless taxi company, has already reached Level 4, or highly automated driving, in driverless technology. Other driverless cars, including Tesla, are also becoming increasingly popular. Currently, except for a few trials, driverless cars are not allowed on British roads. According to the UK's Autonomous Vehicles Act, driverless cars may be on the road as early as 2026. In order to better integrate driverless cars with human-driven cars, engineers at North Carolina State University in the United States proposed adding white lights at traffic lights, which will help control traffic flow and keep drivers informed of road conditions.
Dr. Ali Hajbabaie, who led the research, said the idea is to use the computing power of the driverless car itself to determine the location of vehicles on the road. "The white light is a new traffic signal that drivers can use to determine what to do next. The red light still means stop, and the green light still means go. The white light means that drivers just need to follow the car in front of them," he said. Dr. Hajbabaie and his team published the paper in the journal Computer-Aided Civil and Infrastructure Engineering. They used a series of computer simulation techniques to visualize how the new traffic light system works. The driverless cars can communicate wirelessly with each other and with the computers that control the traffic lights. When enough driverless cars approach the intersection, the new traffic light system will be activated. The white light will light up to remind people that the driverless cars are coordinating through the intersection, and non-driverless vehicles only need to follow behind the vehicle in front.
But most of the time, the standard red, yellow, and green lights are still used on the road, and this system will continue to work as it has for more than a hundred years. The researchers further expanded their research subjects to pedestrians, and they found that the use of white lights can not only improve the traffic efficiency of vehicles, but also improve the traffic efficiency of pedestrians. The implementation of the new traffic light system will improve travel time, fuel efficiency and safety for all people who use the road. Dr. Hajbabaie said: "If at some point in the future, the road is almost entirely full of driverless cars, then our model will reduce delays at intersections by more than 25%." (Compiled and reported by China Youth Network)
(Source: China Youth Network)
