Traffic warning notices like the Cross Traffic Does ... Alternate versions of the Object Marker include diamond shaped signs of yellow and black or red and black, with 9 reflective circles.

Unless you’re a traffic engineer ... They’re almost always yellow diamonds, which means they’re a warning sign. Tetris road signs are warning you about an unusual intersection coming ...

If you commute regularly, you’ve seen them countless times– those alternating black and yellow stripes running along road ...