In addition to making Google's products more environmentally friendly in terms of search and navigation, Google today also announced a rather peculiar plan-using AI to make traffic signs more efficient. This basic concept is to reduce the waiting time of vehicles at intersections in order to reduce fuel consumption and pollution.

Google uses AI to calculate traffic conditions and adjusts the length of the traffic lights in real time based on the conditions. Currently, it is cooperating with the Israeli city of Haifa, Beer Sheva and the Israeli National Road Company to set up test AI traffic lights in four locations in Israel. According to measured data, AI-controlled traffic lights can "reduce waiting time and fuel consumption by about 10% to 20%." Of course, this is only a preliminary experiment. The intersections tested are all relatively simple intersections, so it is not clear how effective the intersections will be when placed in more time-phase and more complex intersections. However, Google has negotiated with more cities in the world such as Rio on the possibility of installing AI traffic signs. Perhaps in the next few years, AI traffic signs will become more popular.

Perhaps some people are worried about the safety of letting AI decide which direction to go and which direction is not to go, but in fact, this is just real-time adjustment of the length of each phase, and it will not disrupt the fixed order of lights. I hope that after the test, the time to wait at traffic lights in the future can be greatly shortened.

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资料来源：https://chinese.engadget.com/google-ai-traffic-lights-research-environment-pollution-070132356-103028835.html