Transportation Analysis - VMT and MTAs

In 2013, the State of California passed Senate Bill 743 (SB 743), which altered how transportation impacts from new development are measured under the California Environmental Quality Act (CEQA). Traditionally, transportation impacts have been assessed in terms of Level of Service (LOS), a measure of automobile delays along a roadway. SB 743 shifts from LOS to metrics aligned with state goals around greenhouse gas reduction, land use diversity, and development of multi-modal travel networks.  The Governor's Office of Planning and Research (OPR) has determined the best metric is Vehicle Miles Traveled, or VMT. Cities and counties are required to establish thresholds of significance in VMT for purposes of conducting transportation analysis under CEQA.

Mountain View VMT and MTA

On June 30, 2020, the City Council endorsed an approach for conducting VMT analysis for development projects that require transportation analysis citywide, in combination with requirements for a local-level analysis of multi-modal transportation impacts (including bicycle, pedestrian, and vehicle movements) referred to as a Multimodal Transportation Analysis (MTA). See Council Staff Report and Materials

For questions or comments, please contact the Public Works Department by phone at 650-903-6311 or email

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