After a period of rapid growth in the 20th century, the number of miles logged daily by vehicles in the Bay Area has more or less plateaued in the early years of this century, a phenomenon reflected in both total number of miles driven and per-capita measures. In 2013, 166 million vehicle miles were driven daily, reaching and slightly surpassing the 2002 peak. Per-capita miles traveled have decreased slightly over this time period, despite significant population growth. Even with economic boom and bust cycles, residents have consistently driven between 22 and 25 miles per day.
At 30 miles per resident, the average daily vehicle miles traveled in the North Bay counties of Marin and Solano top the county-level tallies for the Bay Area in 2013. This figure represents a reduction for both counties from daily VMT averages that ran in the 30-plus range throughout the preceding decade. Conversely, San Francisco has by far the lowest VMT per capita of just 11 miles.