Spain introduces a new red light camera sign (S-991C) across major cities. Find out how it works, where it’s installed, and ...

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 traffic light shifts to yellow just as you approach the intersection. For a second, everything feels uncertain. Your foot ...

Complicating matters: Yellow lights are intentionally different lengths in the U.S. In most places, traffic engineers strive to give people one second to make a decision after they notice the ...

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 … ...

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.