Thursday is Bike to Work Day, when bicycling advocates around the Bay Area urge people to ride their bikes to work.
With bike "energizer stations" giving away drinks, snacks and other goodies, there was a festive atmosphere on some streets as people experienced a climate-friendly, healthful commute.
San Francisco Mayor Mark Farrell used Bike to Work Day to show off a new protected bike lane on Turk St.
Here are a few clip-n-save stickers you can put on your back as you commute by bike -- including one confessional sign a certain cartoonist should wear.
