Most of us have grown up recognizing the classic red octagonal stop sign as an unmistakable symbol of caution and order on the road. So, when a blue stop sign appears, it can be both puzzling and ...

Road signage is everywhere, informing us of speed limits, school zones, and pedestrian crossings, to name a few. These highly visible notices along roadways help organize what would otherwise be utter ...

Kangaroo crossing dirt road in Western Australia. Even as visits to the U.S. by Australians—and many other foreigners—drop in the current political climate, on the flip side, more and more Americans ...