Mental Floss on MSN: Why traffic lights are red, yellow, and green (and not any other colors)
Why traffic lights are red, yellow, and green (and not any other colors)
Yahoo: Why Traffic Lights Are Red, Yellow, and Green (And Not Any Other Colors)
MSN: A 4th color soon on traffic lights? What does white light mean?
A 4th color soon on traffic lights? What does white light mean?
MSN: 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 ...
Researchers Suggest Adding A New Color To Traffic Lights – Here's What It Would Be For
MSN: This Is Why Japan Has “Blue” Traffic Lights Instead of Green
Before we’re old enough to even see over the dashboard, we learn that green means go and red means stop. This internationally recognized traffic light color system is standard in most of the world.
Those blue lights above traffic signals aren’t decorative. Here’s what they’re for and why more cities are installing them. Blue confirmation lights help police spot and enforce red-light violations ...
SlashGear on MSN: Why Some Traffic Lights In Canada Are Square And Diamond-Shaped Instead Of Round
Why Some Traffic Lights In Canada Are Square And Diamond-Shaped Instead Of Round
Jalopnik: What Are The Blue Lights On Some Florida Traffic Signals Used For?
Drivers in certain areas of Florida like Gainesville, Fort Myers, Orlando, and Collier County, have begun noticing odd little blue lights mounted on the top of some traffic signals. What are they ...