Regulation ChangeLiveLive Regulation
CARB Repeals In-Use Locomotive Regulation Under Resolution 25-4
California Air Resources BoardCalifornia Air Resources BoardCalifornia
Announced
Jun 26, 2025
Effective
Jun 26, 2025
Implementation
Jun 26, 2025
Description
On June 26, 2025, the California Air Resources Board adopted Resolution 25-4, formally repealing the In-Use Locomotive Regulation that was originally adopted on April 27, 2023. The regulation had been designed to reduce toxic air contaminants and greenhouse gas emissions from locomotives operating in California. The repeal removes compliance obligations for locomotive operators in California.
Sources
Key Findings
CARB Repeals In-Use Locomotive Regulation Under Resolution 25-4
lution 25-4 June 26, 2025 Agenda Item No.: 25-4-1 Whereas, sections 39600 and 39601 of the Health and Safety Code authorize the California Air Resources Board (CARB or Board) to adopt standards, rules, and regulations and to do such acts as may be necessary for the proper execution of the powers and duties granted to and imposed upon the Board by law; Whereas, on April 27, 2023, the Board adopted the In-Use Locomotiv