Abstract
A combination of high fuel prices, bus maintenance costs, and the health and safety of school children, along with a consideration of federal and state regulations, prompted Medford Township school district in southern New Jersey to explore the use of alternative fuels, specifically biodiesel. The school district owns and operates 62 school buses that transport 3500 children daily. The evolution of this switch from petroleum-based fuel to biodiesel is described. The district is the nation's longest continuous user of biodiesel in a school transportation system.