The modeling lexicon breaks down each metric by name, and provides both the model type used to create it and a definition description for full explanation. Designed as a quick-reference chart, the lexicon provides important information and clarification across all the different VMT metrics, assisting the user in effectively navigating VMT calculations of all types.
Using Our Lexicon Reference
We invite you to explore our VMT Modeling Lexicon, and we are open to comments and input for enhancements to it as well. The lexicon is intended as a helpful reference for unpacking the complexities of VMT analysis and as a road map for accurate calculations.
Are you interested in learning more about VMT metrics, modeling, or California Senate Bill 743 implementation and planning?
share this article
Explore More
Driving Less Starts with Building Differently
How much can planning decisions actually reduce driving? Our latest research introduces a statistical model that links built environment choices—such as density, transit service, walkability, and land use mix—to vehicle miles traveled (VMT). The findings give planners and policymakers practical, evidence-based tools to evaluate scenarios, understand tradeoffs, and make more informed transportation and land use decisions.
Navigating VMT Under CEQA
VMT under CEQA continues to evolve as agencies, practitioners, and decision makers work through analysis methods, mitigation feasibility, and defensible evidence. Our new Q&A resource offers practical answers on vehicle miles traveled, SB 743, mitigation program design, implementation, administration, and legal and strategic considerations.
Demand Management Is Injury Prevention
New research shows that reducing driving exposure may be one of the most powerful safety strategies available. The findings connect VMT, mode share, and travel time to fatality rates, reframing demand management as injury prevention.