Every time we stop at a red light, wait patiently for green, or slow down on yellow, we’re participating in a system that quietly keeps billions of people safe. But have you ever wondered who invented ...

Dear Answer Man: What is it with this town? Every traffic light seems designed to create more traffic jams than they solve. Who is in charge of timing the lights, and when will they fix the ...

Google's Project Green Light uses AI to improve city traffic. It aims to reduce greenhouse gas emissions, which are high when cars idle at traffic lights. The system also helps to shorten wait times ...