Volpe National Transportation Systems Center, Technical Reference Center;BTS Productshttps://doi.org/10.21949/15234501987PDFStatistical ReportBradley, KathleenJohn A. Volpe National Transportation Systems Center (U.S.)United States. Department of Transportation. Research and Special Programs AdministrationUnited States. Dept. of Transportation. Research and Special Programs AdministrationUnited StatesAir transportationPublic transitRailroad transportationHighway transportationPipeline transportationStatisticsCostsPerformanceVehicle miles of travelOperating revenuesEnergy consumptionNTSDOT-TSC-RSPA-87-06National Transportation Statistics was formed by the union of: United States. Department of Transportation. Office of the Assistant Secretar...