No, those blue reflectors on the road aren’t random. They’re critical for emergency crews to locate an important marker ...

Amidst the hustle and bustle of the drive to and from work, while trying to negotiate chaotic traffic and the latest episode of your favorite podcast, you may have either never noticed or simply just ...

What’s That Thing is Slate’s column examining mysterious or overlooked objects in our visual landscape. To submit suggestions and pics for future columns, send a description or a pic to ...

It wasn't that long ago, especially in the Midwest, that rare was the highway that relied on raised pavement markers to improve safety. But as research showed the impact raised markers can have on ...

On rainy nights in Georgia and across the nation, drivers greatly benefit from small, reflective markers that make roadway lanes more visible. A new automated system for installing the markers is ...

Reflectors are vital for road safety, especially on poorly lit roads or in adverse weather. Using retroreflection, they return vehicle headlight beams to drivers, improving visibility of road ...

Engineers are placing low-powered sensors in the reflective raised pavement markers that are already used to help drivers identify lanes. Microchips inside the markers transmit information to passing ...

Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF. Visit NAP.edu/10766 to get more information about this ...