The reason why the 'blue' light is green: I thought it was just a matter of naming, but it turns out the law was changed to match the color too

The 'blue light' on a traffic signal actually looks green, doesn't it? I think this is something most people are already ...
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Red, yellow, green… and white? The new traffic signal color you need to know

If you’ve seen talk about a white traffic light or images of a signal with an unfamiliar fourth color, you’re not imagining it. With everything drivers already pay attention to at intersections, ...
Road & Track

Study Proves Stoplights Need a Fourth Color: White

As more self-driving cars enter roadways around the world, many aspects of driving could change forever. More electric vehicles (EVs) and autonomous vehicles (AV) are already leading engineers to ...
Al Jazeera English

A brief history of the traffic light and why we need a new colour

The universally known traffic light has not experienced a significant redesign in almost 100 years, ever since William Pott, a Detroit police officer, created the first three-section traffic light in ...
SlashGear

Researchers Suggest Adding A New Color To Traffic Lights – Here's What It Would Be For

Transportation engineers at North Carolina State University have proposed that an additional color be added to existing traffic lights. This new color would be a white light, intended for the use of ...
Autoblog

Noticed Blue Lights Above Traffic Signals? There’s a Reason

Those blue lights above traffic signals aren’t decorative. Here’s what they’re for and why more cities are installing them.