Unanticipated Barriers and Progress Report

On June 24, 2026, CPED published the California Clean Miles Standard Unanticipated Barriers and Progress Report. 

California’s Clean Miles Standard statute requires the California Air Resources Board to adopt annual targets for the reduction of greenhouse gas emissions by transportation network companies and directs the California Public Utilities Commission to implement the program, including assessing whether unanticipated barriers exist that would justify delaying implementation of the targets. 

Pursuant to the requirements of P.U. Code 5450 (b)(4), as well as CPUC Decisions (D.) 24-03-001 and D. 26-02-005, this Unanticipated Barriers and Progress Report evaluates progress toward CMS compliance, reviews electric vehicle adoption and charging infrastructure trends, and assesses barriers affecting the ability of regulated entities to expand usage of zero-emission vehicles and meet the CMS targets. The report also reviews impacts on low-to-moderate income drivers and assesses environmental, social justice and clean mobility goals pursuant to the CMS Phase 1 Decision.