There are dozens of signs along the road that warn you of upcoming hazards or road conditions for which you may need to ...

Traffic signs have to communicate crucial information quickly and simply, to anyone who might be on the road. They use ...

Retroreflection increases signs’ visibility because it reflects light directly back in the direction it came from. Retroreflective signage. Caltrans began phasing in retroreflective signage in 1999.

Road signs have changed case in the last 15 years or so—here's why. ... These include cardinal directions (north, south, east, and west), ...