This is the third attempt to pass such a law in as many years. In 2011 and 2012, Brown cited safety concerns when he vetoed two previous versions of the law.
Last year's proposed law would have allowed motorists to cross a double yellow line to give the required three feet; 2011's version would have required motorists to slow to 15 mph if they could not provide three feet of passing room.
AB 1371 does not allow motorists to cross a double yellow line; if there is not enough room to provide a three-foot buffer zone, motorists must slow to a safe and reasonable speed.
Across the San Francisco Bay Area, the world is definitely getting more bike friendly. Cities and communities are adding miles of new bike lanes.