(WHTM) — We see traffic lights all the time. Sometimes we get green lights, and sometimes we hit all the red lights on our commute to work. But, while sitting at a red light, have you ever wondered ...

The Connecticut Department of Transportation is installing new traffic signals that have reflective backplates. These 3-inch yellow borders improve visibility at night. Credit: CDOT / Instagram Did ...

Today, almost every country follows this three-colour traffic light system. International road safety agreements and vehicle design standards are built around it.

Japan traffic lights: Basic traffic rules like understanding traffic lights are taught to us during childhood in school and at home. Every regular child knows that Red means stop, yellow means wait, ...

Semiconductor lighting technology is developing rapidly. While seeking high luminous efficiency, low cost, and superior reliability, researchers are increasingly focusing on the effects of LED ...