policy

This report summarizes outcomes from a literature review and analysis of shared mobility program data to (1) identify average trip length defaults for car share, bike share, and scooter share projects, and (2) determine whether and how the current adjustment factors used for car share and bike share projects could be modified to better reflect emerging data and methods for estimating VMT and greenhouse gas (GHG) emissions reductions from shared mobility programs.

This policy brief summarizes findings and policy implications from research that assessed the administration of the gasoline tax, including collection and distribution of revenues, to determine what barriers and opportunities might exist for a road user charge funding mechanism.

The report explores the necessity to correctly estimate the preference for vehicle holdings of households as well as the vehicle miles traveled by vehicle body- and fuel-type to project future Vehicle Miles Traveled changes and mobile source emission levels. The report presents the application of a utility-based model for multiple discreteness that combines multiple vehicle types with usage in an integrated model, specifically the MDCEV model.

This project focuses on the LOS to VMT shift as a transportation impact metric for land development projects under the California Environmental Quality Act (CEQA). The authors expand on the differences this shift has posed upon land development projects, and explore the government's involvement in measuring the actual VMT levels.

This research aims to assess the goals and effectiveness of the fees and taxes on transportation network company (TNC) platforms in achieving some of policy objectives, such as traffic and emissions mitigation, as well as revenue generation.

This policy brief assesses state and local Transportation Network Company taxes across the United States and develops a method of comparing per-ride and percentage taxes in order to the examine the likelihood of these taxes encouraging more sustainable travel.

UC Davis researchers surveyed homeowners in Sacramento and collected lot size and other data to investigate whether the total effective parking supply of the average single-family detached home is sufficient to accommodate the vehicles associated with the residents of both a primary dwelling and a potential ADU.