The yellow light would not come into play until the 1920s. William Potts, who was a police officer in Detroit, is credited for designing the first three and four-way colored traffic lights.

The yellow light didn’t enter the scene until the 1920s. William Potts, who was a police officer in Detroit, is credited with designing the first three- and four-way colored traffic lights.

Traffic lights have origins on the railways, but they weren't always red, yellow, and green. There was once a white light, and that was not such a great idea.

Researchers are exploring ways to use features in modern cars, such as GPS, to make traffic safer and more efficient. Eventually, the upgrades could do away entirely with the red, yellow and green ...

Smarter vehicles could mean some of the most dramatic changes for the traditional traffic signal since the yellow light was added more than a century ago.

The yellow light didn’t enter the scene until the 1920s. William Potts, who was a police officer in Detroit, is credited with designing the first three- and four-way colored traffic lights.

Danielle Deneau, director of traffic safety at the Road Commission in Oakland County, Michigan, said the initial data in Birmingham only adjusted the timing of green lights by a few seconds, but ...

Sometimes we sail past green lights, and sometimes we hit every red light on our commute to work. There are a few reasons why the colors red, yellow and green were chosen for traffic lights.

A traffic light is a common thing nowadays and you, just like all the other drivers, must obey the rules: if it's green, you pass, if it's red, you stop, and if it's yellow, you act with caution.