The Federal Railroad Administration (FRA) funded a project conducted by Transportation Technology Center, Inc.’s (TTCI) Association of American Railroads’ (AAR) Natural Gas Fuel Tender (NGFT) Technical Advisory Group (TAG) in developing industry standards for NGFT tenders. The objective was to measure and understand the triaxial displacement environment that interconnections (e.g., gas, cooling system loop, electrical, air, etc.) between the locomotive and adjacent tender vehicle will face during normal full-scale freight train operations in revenue service.