The selection of these colors is deeper than you think.

These different shapes have been around certain parts of Canada directing traffic for decades. However, they are being slowly ...

Red means stop, green means what? A six-light traffic signal outside Prospect Park that shines separate “go” lights for bicycles and cars is too confusing for drivers, who routinely run their red ...

Ah, the yellow light. You know, that signal that is supposed to let you know to slow down as you approach the intersection, but makes you speed up instead? You probably take it for granted, but ...

DETROIT – The first tri-color, four-way traffic signal was installed at Woodward Avenue and Fort Street in Detroit in 1920. William Potts, a traffic officer, invented the signal, adding the yellow ...