Based on 2014 data collected by GPS developer TomTom, San Francisco is home to the country's second most congested roadways with a 34 percent congestion level — a four percent increase since 2012.

But it’s a close call. The Washington-based traffic data company INRIX surveyed 1,064 cities on five continents in 2016 and dubbed San Francisco’s congestion the fourth worst in the world.

One reason for the congestion may be that Los Angeles County has a population of more than 10 million people, according to the Census Bureau. San Francisco scored the number two spot on TomTom's ...

San Francisco was the fourth-most congested city, while Bogota, Colombia, was fifth, Sao Paulo ranked sixth and London, Atlanta, Paris and Miami rounded out the top 10. Being stuck in traffic cost ...

SAN FRANCISCO (KGO) -- San Francisco's reality is that traffic congestion is worse than ever, in part, because of Uber and Lyft and fewer people are riding bicycles because they fear getting ...

How will they get around? We already have traffic congestion - we can't absorb tens of thousands of additional car trips in San Francisco. If we wait, it will be too late. There is no high-tech ...

Traffic congestion increased 25 percent in the San Jose area from April 2012 to April of this year, and 22 percent in the San Francisco region over the same period, according to a new study by the ...

As usual with holiday weekends, flexibility pays off and the best time to hit the road is in the morning. On Thursday, May 22 ...