In a just released poll by the Bay Area Council a majority of respondents indicated an expectation that traffic congestion in the Bay Area (the San Jose-San Francisco combined statistical area) is likely to get worse.
It is already bad enough. The Bay Area includes two major urban areas (over 1,000,000 population), with San Francisco ranked second worst in traffic congestion in the United States, closely following Los Angeles. In San Francisco, the average travel time during peak travel hours was reported to be 41 percent worse due to traffic congestion, according to the 2015 Annual Mobility Report from the Texas A&M Transportation Institute. That means a trip that would normally take 30 minutes without congestion stretches to 42 minutes. Los Angeles is only slightly worse, where the travel time congestion penalty is 43 percent. In the adjacent and smaller San Jose urban area, congestion adds 38 percent to travel times, tying with Seattle as third worst in the nation.