Some things are so ubiquitous that it's easy to forget they're designed for a reason. With more than 300,000 traffic lights set up across the United States, it's easy to take how they look for granted ...

Transportation engineers at North Carolina State University have proposed that an additional color be added to existing traffic lights. This new color would be a white light, intended for the use of ...

Every car speeding by and person crossing the street is living out their own story, traveling in their own direction, under the same three-light system. We encounter traffic lights nearly every day, ...