
San Francisco's Rush Hours
Rush hour and traffic congestion depends on the area that you're talking about, however in general, it's safe to say that all of San Francisco can seem to be battling rush hour traffic in the morning and evenings.
The morning rush hour begins at about 7:30 am and goes on until 9:30 am or a little after. It starts all over again early in the afternoon. If you're planning on getting somewhere in a hurry after 3pm and until 7pm, it would be a smart idea to leave well in advance.
This applies to traffic moving both in and out of the city. Asking locals for advice also helps.
http://www.ixda.org/discuss.php?post=16158
http://ask.metafilter.com/137740/Need-advice-on-rush-hour-travel-between-OAK-and-downtown-San-Francisco

