Cars that drive themselves are no longer just a concept you'd see in sci-fi movies imagining the near future. Companies like Waymo are already using self-driving cars, and you can ride in a robotaxi ...

Traffic engineers are quietly working on a radical idea: adding a white signal to the familiar red, yellow, and green. Instead of signaling drivers directly, the extra light would tell humans when to ...

Traffic lights have been with us since 1868, when the first gas-powered set was switched on in London. These lights used a semaphore system similar to those used by the railways of the day and ...

THIS IS IOWA’S NEWS LEADER. KCCI EIGHT NEWS AT SIX STARTS RIGHT NOW. CITY LEADERS SAY A SPECIAL TRAFFIC LIGHT EXPERIMENT IN DES MOINES IS MAKING INTERSECTIONS SAFER. KCCI SENIOR REPORTER TODD MAGEL IS ...