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.

Before we’re old enough to even see over the dashboard, we learn that green means go and red means stop. This internationally ...

Drivers who routinely make the trip down College Street heading east have probably wondered what’s up with the slatted traffic light at the Martin Luther King, Jr., Boulevard intersection. I’ve found ...

On this day in 1920, the way people drove was changed forever when a Detroit traffic cop installed a four-way, tri-color traffic signal on Woodward Avenue in Detroit. Skip to main content.

The blue lights on top of traffic signals, also known as confirmation lights, are designed to assist law enforcement detect drivers who run red lights.

I’m wondering why poles for street lamps and stop lights are being repainted black instead of yellow. -- Color curious As I said in a spectacular column in 2018, the color change is a cost ...