Clean Green Florida Propane
https://www.youtube.com/watch?v=htsDUI9cd2M

California assessment of risks of diesel pollutants.
http://oehha.ca.gov/public_info/facts/dieselfacts.html

Propane Reduces Greenhouse Gas Emissions: A Comparative Analysis.
http://www.propanecouncil.org/uploadedFiles/REP_15964 Propane Reduces GHG Emissions 2009.pdf

Indian River County School District Case Study
https://roushcleantech.com/portfolio/indian-river-county-school-district-2/

Propane Fueling Infrastructure
https://roushcleantech.com/portfolio/propane-fueling-infrastructure/

Transit Operation Case Study
https://roushcleantech.com/portfolio/charlevoix-county-transit/

Propane School Buses Reduce Transportation Department Maintenance Cost
https://roushcleantech.com/portfolio/propane/

PERC White Paper on Propane in Pupil Transportation
https://propane.com/2024/08/27/driving-the-future-of-clean-student-transportation/

EPA Case Study on Pennsylvania Propane School Bus Deploymen
https://propane.com/2024/08/27/driving-the-future-of-clean-student-transportation/

School Districts Move to the Head of the Class with Propan
https://afdc.energy.gov/files/u/publication/school_districts_propane.pdf?3714bcee81