A red-and-white regulatory traffic sign. This is the only octagonal (8-sided) traffic sign, you can easily recognize it by both shape and color.
Placed at intersections to inform drivers that stop signs control all entrances to this intersection. Drivers use 1st to arrive, 1st to leave rule
Driver is going the wrong way on an expressway exit ramp or highway. Do not drive past this sign. Turn around immediately.
Placed when it is not clear where vehicles must stop at an intersection with traffic signals. If there is a stop line, stop right before stop line.
Road sign shape is a Triangle. Driver must slow down to a speed that is reasonable for existing conditions. Be Alert