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Appendix A: List of Acronyms

Appendix A: List of Acronyms

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z


AAR Association of American Railroads

ADA Americans with Disabilities Act

APTA American Public Transportation Association

ATPI Air Travel Price Index

ATTI Air Travel Time Index

ATTVI Air Travel Time Variability Index


BEA Bureau of Economic Analysis

BLS Bureau of Labor Statistics

BTS Bureau of Transportation Statistics

Btu British thermal unit


CBP U.S. Customs and Border Protection

CFS Commodity Flow Survey

CO carbon monoxide

CO2 carbon dioxide

CPI Consumer Price Index

CPSC Consumer Product Safety Commission


DHS U.S. Department of Homeland Security

DOC U.S. Department of Commerce

DOE U.S. Department of Energy

DOL U.S. Department of Labor

DOT U.S. Department of Transportation

dwt deadweight tons


EIA Energy Information Administration

EPA U.S. Environmental Protection Agency


FAA Federal Aviation Administration

FHWA Federal Highway Administration

FMCSA Federal Motor Carrier Safety Administration

FRA Federal Railroad Administration

FTA Federal Transit Administration

FY fiscal year


GDP Gross Domestic Product

GHG greenhouse gas

GIS geographic information systems

GVWR gross vehicle weight rating


HMIS Hazardous Materials Information System


ISTEA Intermodal Surface Transportation Efficiency Act

ITS intelligent transportation system


MARAD Maritime Administration

MFP multifactor productivity

MISLE Marine Information and Safety Law Enforcement

mmtc million metric tons of carbon

mpg miles per gallon

mph miles per hour

MPO metropolitan planning organization

MSA metropolitan statistical area


NAICS North American Industry Classification System

NEI National Emissions Inventory

NEISS National Electronic Injury Surveillance System

NHTS National Household Travel Survey

NHTSA National Highway Traffic Safety Administration

NOX nitrogen oxides

NPIAS National Plan of Integrated Airport Systems

NTAD National Transportation Atlas Database

NTD National Transit Database

NTS National Transportation Statistics report

NTSB National Transportation Safety Board


O&D origin and destination

OECD Organization for Economic Cooperation and Development

OOS out of service

OPEC Organization of Petroleum Exporting Countries


PM-2.5 particulate matter of 2.5 microns in diameter or smaller

PM-10 particulate matter of 10 microns in diameter or smaller

pmt passenger-miles of travel


quads quadrillions


RITA Research and Innovative Technology Administration

rpm revenue passenger-mile


SAFETEA-LU Safe, Accountable, Flexible, Efficient Transportation Equity Act—A Legacy for Users

SCTG Standard Classification of Transported Goods

SE standard error

SIC Standard Industrial Classifi cation

STOL short take-off and landing

SUV sport utility vehicle


TEA-21 Transportation Equity Act for the 21st Century

TEU 20-foot equivalent container unit

TgCO2Eq teragrams of carbon dioxide equivalent

TSAR Transportation Statistics Annual Report

TSI Transportation Services Index

TTI Texas Transportation Institute

TTI Travel Time Index


USCG U.S. Coast Guard

USDOT U.S. Department of Transportation


VIUS Vehicle Inventory and Use Survey

vmt vehicle-miles of travel

VOC volatile organic compounds

Updated: Saturday, May 20, 2017