Q: Road signs in construction zones are orange. Aside from color, some look like “mandatory” black-and-white signs, while others look like the yellow “advisory” cautionary and warning signs. So, are ...

The Manual on Uniform Traffic Control Devices, the bible for traffic signs, lists two kinds of pedestrian-activated signals.

Q: I am confused as to why the speed limit signs going into and leaving town are often not across from each other, meaning, I guess, that going one direction it is OK to go 50 mph, while in the other ...

Traffic signs have to communicate crucial information quickly and simply, to anyone who might be on the road. They use letters and numbers to lay out information in plain language but they also use ...