This dataset was provided to the San Francisco Planning Department from the San Francisco County Transportation Authority (Transportation Authority) in March 2016. The Transportation Authority uses the San Francisco Chained Activity Model Process (SF-CHAMP) to estimate vehicle miles traveled (VMT) by private automobiles and taxis for different land use types. Travel behavior in SF-CHAMP is calibrated based on observed behavior from the California Household Travel Survey 2010-2012, Census data regarding automobile ownership rates and county-to-county worker flows, and observed vehicle counts and transit boardings. SF-CHAMP uses a synthetic population, which is a set of individual actors that represents the Bay Area’s actual population, who make simulated travel decisions for a complete day.

VMT estimates are provided for existing (2012) and future (2040) for three land use types: office, residential, and retail. For these estimates, Transportation Authority used tour-based analysis for office and residential uses and a trip-based analysis for retail uses. The aforementioned VMT estimates are provided for each transportation analysis zone within San Francisco and compared to regional averages.

Refer to March 3, 2016 San Francisco Planning Commission Transportation Sustainability Program staff report for further details.

The data is in a zipped file geodatabase (GIS) format. Geographic boundaries are Traffic Analysis Zones (TAZ's).