BIKES, NOT BOMBS

Critical Mass is a healthy part of your low oil, low bloodshed
diet. It's a party for your bike, for you, and all your family
and friends!

Join nearly 100 cities worldwide every month in a Critical Mass
of pollution-free, space-friendly, fun-loving traffic.

Come along for the ride!

CRITICAL MASS
San Francisco

5:30 pm, the last Friday of every month, Justin Herman Plaza
at the foot of Market Street (near Embarcadero BART)