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 ...

You must have seen traffic lights while coming and going on the road. It plays an important role in maintaining order on the road and in ensuring the safety of the people. The three colors (Traffic ...

Traffic lights are not as straightforward as you may think. For instance, Japan has blue traffic lights, and while it's common to see the lights arranged vertically, some U.S. states mount them ...