SF ranked as second most congested city in U.S.

SAN FRANCISCO

According to the latest TomTom Congestion Index, San Francisco is now the second most congested city in the U.S. That's up from the number five position. And get this -- only Los Angeles is worse.

The navigation systems maker found average travel times are 29 percent longer during peak commute periods.

Some other findings:

- For each hour we're on the road during rush hour, 34 minutes of that is caused by delays.

- Avoid driving on Thursdays, that's the most congested day in the Bay Area.

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