Red and green traffic lights have been around since the 1800s, when British traffic officers used to rotate gas lamps that burned red and green to control the movement of mostly horse-drawn vehicles.

Mt. Juliet commissioners have approved a contract for technology that gives fire trucks and emergency medical vehicles an exclusive green traffic light to go through at 24 intersections when ...

Many cities are replacing their incandescent traffic lights with LEDs, despite the higher initial cost. Here's why that's ...

Modern traffic light technology isn't just a simple sequence of red, yellow, and green. It's a complex detection system designed to manage traffic flow based on real-time demand. The very first "smart ...

Mt. Juliet has approved preemption traffic signal technology for 24 intersections designed to override lights for fire trucks and emergency medical vehicles. Mt. Juliet commissioners have approved a ...