San Franciscans don’t drive nearly as much as previously thought, according to new SFMTA survey data. But the needle hasn’t moved much in recent years either.
More than 50 percent of trips in San Francisco are made without a private automobile — and it’s been that way for at least three years, according to travel survey results presented at an SFMTA Board meeting today [PDF, page 18]. Last year, 52 percent of trips in the city were made by transit, walking, biking, car-share, taxi, or ride hailing services like Lyft and Uber.
Solo driving accounted for only 27 percent of trips in 2014, the SFMTA found, with carpooling accounting for another 21 percent. Those two types of trips are what the agency counts as “private auto” trips.
The findings are a significant departure from previously released data on city travel patterns, which had estimated that 62 percent of trips in the city are made with private autos. But those numbers were based on a less accurate survey methodology, SFMTA Sustainable Streets Director Tom Maguire told the Board.
The old data “probably didn’t tell us the whole picture,” said Maguire, who explained that the old numbers were based mostly on traffic planning forecasts and U.S. Census data that are at least five years old. The new data is based on a local, annual “Travel Decision Survey” conducted by the SFMTA which asked residents and commuters detailed questions about their travel behavior.