Hybrid Shuttle Bus Testing and Demonstration, ARBOC “Spirit of Mobility”

September 2014

This report presents the evaluation of two ARBOC Specialty Vehicles “Spirit of Mobility” gasoline hybrid shuttle buses in revenue service for a municipal fleet (City of Tracy, California) over six months. Each bus, built on a GMC 4500 chassis, was outfitted with an ultra capacitor hybrid system, which provides boost during acceleration events while recapturing energy during braking events. A baseline was established by disengaging the system on one of the buses throughout the duration of the test. The two vehicles traveled a total of 31,900 miles, consumed 5,070 gallons of fuel during 2,878 hours of operation and carried an estimated 42,000 passengers.