Reducing Rail Emissions in California
CARB has developed and implemented measures to understand and reduce locomotive and railyard emissions in California, including studies, regulations, enforceable agreements, and funding of clean technology.
More about this program
New In-Use Locomotive Regulation
On April 27, 2023, CARB approved the In-Use Locomotive Regulation to transition locomotive operations to zero emissions. The Final Regulation Order and additional information about the Regulation can be found on our Rulemaking Page. Summaries of the new requirements for locomotive operators are also available on the Locomotive factsheet website.