off-vehicle electric energy source / rotational kinetic energy / model year hybrid-electric drive systems / energy source / stores chemical energy / propulsion energy / energy level / kinetic energy / subsequent model year hybrid-electric drive systems / stores energy / electric energy remaining / consumable fuel energy / engine manufacturer / energy content / energy storage system / exhaust gas aftertreatment type / electrical energy / energy / actual measured energy content / /
Rulemaking: [removed]Interim certification procedures for Amendments to the Public Transit Bus Fleet Rule and Emission Standards for New Urban Buses