Horizontal traffic lights are common in some parts of the U.S. and can confuse drivers unfamiliar with them. Here’s what you need to know about their meaning and why they're used.

According to the FHWA, backplates added to a traffic signal indication improve the visibility of the illuminated face of the signal by introducing a controlled-contrast background.

Traffic light upgrades at intersections in Exeter and West Reading get state funding Grant funding has been given for a total of ten traffic signal projects in Berks.

Idaho state law allows a driver to wait in an intersection at a yellow light during a left turn, according to Ada County Highway District.

Reflective backplates, a border on traffic signals to make them stand out, were installed on red-light-camera intersection signals in late 2023.