School Districts Move to the Head of the Class with Propane

Kendall Septon

Research output: NRELBrochure


Propane has been a proven fuel for buses for decades. For the first time in 2007, Blue Bird rolled out a propane school bus using direct liquid injection, which was later followed by Thomas Built Buses and Navistar. Because this new technology is much more reliable than previous designs, it is essentially reintroducing propane buses to many school districts. During this same time period, vehicle emissions standards have tightened. To meet them, diesel engine manufacturers have added diesel particulate filters (DPF) and, more recently, selective catalytic reduction (SCR) systems. As an alternative to diesel buses with these systems, many school districts have looked to other affordable, clean alternatives, and they've found that propane fits the bill.
Original languageAmerican English
Number of pages4
StatePublished - 2016

NREL Publication Number

  • NREL/BR-5400-64619

Other Report Number

  • DOE/GO-102016-4719


  • buses
  • cold-weather
  • costs
  • efficiency
  • efficient
  • fleets
  • propane


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