TNCs & Congestion in San Francisco

Vehicle Hours of Delay (VHD) is a measure of the overall amount of excess time vehicles spend in congestion.

is a measure of the overall amount of excess time vehicles spend in congestion. Vehicle Miles Traveled (VMT) is a measure of the overall amount of motor vehicle travel, as measured in distance, that occurs on the network.

is a measure of the overall amount of motor vehicle travel, as measured in distance, that occurs on the network. Speed is the average speed of vehicles on a given road segment during a given time period.

How to use this map

Select a congestion metric to display it on the map.

Explore the contributions of different factors to changes in congestion.

Choose a time period to display.

Click on a colored roadway segment on the map to see segment-specific information.

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Use this map to explore changes in congestion metrics between 2010 and 2016. The tool provides the ability to look at the effects of four factors that affect congestion: changes in network capacity, changes in population, changes in employment, and changes in TNCs.