Existing law provides various provisions applicable to all public transit and transit districts and includes specific requirements applicable to public entities that operate commuter rail or rail transit systems. This bill would prohibit a public entity that owns diesel-powered on-track equipment from selling, donating, or otherwise transferring ownership of that equipment for continued use after the public entity decommissions the equipment. The bill would exempt the sale, donation, or transfer of the ownership of that equipment from the prohibition if the equipment is deemed to be in one of specified categories of emissions standards designated by the federal government for locomotives, the equipment produces emissions equivalent to any equipment within any of those federal categories, or the diesel engine is removed from the equipment, as specified.