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Iowa State University--Becoming the Best

In-Use Fuel Economy and Emission Benefits of Hybrid-Electric School Buses in Iowa

Hybrid-electric school bus in Sigourney, Iowa

Hybrid-electric school bus in Sigourney, Iowa


Principal investigator: Shauna Hallmark, 515-294-5249, shallmar@iastate.edu (project list)

Co-principal investigator: Robert Sperry

Other authors: Abishek Mudgal

Student researcher: Abhisek Mudgal, 515-296-6686, abhisek@iastate.edu

Project status


Start date: 07/01/06
End date: 06/30/10


Report: August 2010, http://www.intrans.iastate.edu/reports/Hallmark_hybridbus_report.pdf 2.24 mb (*pdf)

Related publications:

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Sponsor(s):Iowa Energy Center

About the research

Abstract: This report summarizes the evaluation results of an in-use fuel economy evaluation for two plug-in hybrid school buses deployed in two different school districts in Iowa. Each school district selected a control bus that runs a route similar to that of the hybrid bus. Odometer readings, fuel consumption, and maintenance needs were recorded for each bus. The buses were deployed in 2008.