The Battery and Regenerative Braking Act amends title 49, United States Code, to expand eligibility for the consolidated rail infrastructure and safety improvements program . This legislation aims to promote advanced technologies within the rail sector by allowing new types of projects to receive federal support. Specifically, the Act makes entities providing commuter rail passenger transportation eligible for funding under this program. These eligible projects must focus on the development and implementation of regenerative braking and energy storage technologies . This change is intended to encourage energy efficiency and technological modernization in commuter rail operations.