An international treaty requires the "go" light to be green, so why does Japan often substitute blue? The answer has ancient roots in the nation's language.

US Route 20 starts in Boston, Massachusetts, and ends in Newport, Oregon. It's America's longest highway, measuring approximately 3,365 miles. However, nobody needs to drive for almost four days to ...

The post Green Means Go Is A Nearly Universal Traffic Rule, Until You Get To Japan first on TwistedSifter.

Distance signs on the highway tell you important information, including how far you are from your destination, where the next exit is, or when to expect a rest stop. These signals aren't always ...

Question: I know you’ve wrote about regulatory and warning type signs before. Can you write about what some of the other signs when it comes to services and guidance? A portion of state statutes were ...

A thin film that reflects light in intriguing ways could be used to make road signs that shine brightly and change color at night, according to a study that will be published on Aug. 9 in Science ...