Ambulance manufacturers have provided NASEMSO with what is believed to be the first ever side by side comparison of the GSA KKK-A-1822F August 1, 2007 “Federal Specification for the Star-of-Life Ambulance” specification, ASTM F2020 - 02a(2009)” Standard Practice for Design, Construction, and Procurement of Emergency Medical Services Systems (EMSS) Ambulances”, and NFPA 1917 “Standard for Automotive Ambulances”. A slide show and comparison table can be downloaded here.