So-called “transportation network companies” (TNCs) such as Lyft and Uber account for about 50 percent of the increase in San Francisco street congestion between 2010 and 2016, according to a new report from the San Francisco County Transportation Authority. During that time, travel speeds on major arteries decreased by 26–27 percent during peak travel times. That led to an increase in “vehicle hours of delay on the major roadways” of 40,000 hours on a typical weekday, “while vehicle miles travelled on major roadways increased by over 630,000 miles on a typical weekday,” according to the report, “TNCs and Congestion,” which was released in October.
In one of the more eye-opening statistics in the report, we learn that San Francisco locals and visitors make more than 1 million TNC trips in the city every week.
