Four-way stop

[snopes]

http://www.parade.com/articles/editi...07/Ask_Marilyn

Q: Say that four cars arrive simultaneously at a four-way stop. Who goes first?

A: No rule applies. The drivers must choose among themselves and communicate as best they can. But after the first driver proceeds, each driver then must yield to the driver on the right, which means they should proceed in a clockwise fashion.