Sorry for the lame headline cliche — it's Friday afternoon, people. Normally that's good news. But if you count yourself in the pariah caste of San Franciscans who still commute by automobile, this evening may be a little less pleasant than usual. Public transit riders — you may be screwed, too.
Two big events are likely to create huge traffic headaches today. First is Critical Mass, the “spontaneous” invasion of San Francisco streets by hordes of scofflaw bicyclists on the last Friday of every month. (As a colleague at SF Weekly notes, the “spontaneity” of this bike-nut ritual resembles that with which Chinese soldiers streamed into Korea in 1950.)
Second is the Outside Lands festival, which runs today, Saturday, and Sunday in Golden Gate Park. After a wildly successful first year, Outside Lands is expected to rock, again. But it's sure to make the city's streets and public-transit system groan with eager concert-goers, and tonight, in combination with Critical Mass, things could get ugly. Don't forget — there's also a big Giants game vs. Colorado starting shortly after 7 p.m.