Simply put, the Idaho Stop Law allows cyclists to treat stop signs as yield signs. It is called the Idaho Stop Law because it has been in effect in Idaho since 1982. Take a few minutes to look at this well made video about why the Idaho Stop Law might be good for us too! http://bikeportland.org/2009/04/14/get-an-animated-lesson-in-bikes-stop-signs-and-the-idaho-stop-law-17161