
Blue stripes on roads aren’t common. So what do they mean?!
In the landscape of the American roadway, four colors seem to reign supreme for background signage: green, yellow, orange, and blue. Green (with white lettering) is the status quo across freeways and most municipal markers for value-neutral guidance and wayfinding. Yellow (with black lettering) is most pervasive in signaling a permanent aberration: e.g., a change








