SAN FRANCISCO (CBS SF) — San Francisco has the second worst traffic in the country, just behind Los Angeles, according to a website that measures congestion levels in urban cities.

The TomTom Traffic Index ranks traffic in 218 cities on 6 continents. On a global scale, The City is ranked 26th, well-behind big cities like Paris (22), London (16), Beijing (15) and Rome (13). Los Angeles beats them all, in the 10th spot.

The three worst cities are Istanbul, Mexico City, and Rio de Janeiro.

But back to San Francisco. According to, the most congested day on record was Tuesday, December 16, 2014. That was the day a major storm passed through the Bay Area. San Francisco airport canceled 80 flights due heavy winds and rain. The evening commute was a water-logged nightmare due to flooded roads.

According to the site, San Francisco’s worst morning congestion is midweek on Tuesdays, Wednesday and Thursdays. The worst evening congestion is on Thursdays.

TomTom’s mission is to reduce traffic globally by providing traffic information so commuters can avoid congested roads and get to their destinations faster.


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