The experience of moving through San Francisco in a car has gone from slow to crawl.

Congestion in the Bay Area flagship city has grown increasingly worse, and a new report by the San Francisco County Transportation Authority placed a sizable portion of that blame on ride-hailing services like Lyft or Uber.

“It appears that TNCs (transportation network companies) contributed approximately 50 percent of the overall increases in congestion in San Francisco between 2010 and 2016,” the report reads.

To be clear, TNCs are not the only factor contributing to clogged streets. This city — which measures roughly 7 miles by 7 miles — has grown in both population and jobs. San Francisco grew from about 805,000 residents in 2010 to 876,000 residents in 2016, an 8.8 percent increase, according to the county report. Meanwhile, the city supported about 700,000 jobs in 2016, a 28.4 percent jump from 2010, which means more commuters funneling into the city.

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