Appendix A: List of Acronyms and Initialisms

Appendix A: List of Acronyms and Initialisms

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


ADA - Americans with Disabilities Act

AFV - alternative fuel vehicle

APTA - American Public Transit Association

ATS - American Travel Survey


BAC - blood alcohol concentration

BEA - Bureau of Economic Analysis

BTS - Bureau of Transportation Statistics

Btu - British thermal unit


CAA - Clean Air Act

CAFE - Corporate Average Fuel Economy

CFR - Code of Federal Regulations

CFS - Commodity Flow Survey

CO - carbon monoxide

CO2 - carbon dioxide

CRAF - Civil Reserve Air Fleet


dB - decibels

dBA - A-weighted decibels

DGPS - Differential Global Positioning System

DNL - day-night noise level

DOD - U.S. Department of Defense

DOI - U.S. Department of the Interior

DOT - U.S. Department of Transportation

DWT - deadweight tons


EDS - Explosive Detection Systems

EIA - Energy Information Administration

EJ - environmental justice

EPA - U.S. Environmental Protection Agency

EPNdb - effective perceived noise level

ETC - electronic toll collection

ETMS - Enhanced Traffic Management System


FAA - Federal Aviation Administration

FARs - Federal Aviation Regulations

FARS - Fatality Analysis Reporting System

FHWA - Federal Highway Administration

FRA - Federal Railroad Administration

FTA - Federal Transit Administration

FY - fiscal year


GA - general aviation

GAO - General Accounting Office

GDD - Gross Domestic Demand

GDP - Gross Domestic Product

GHG - greenhouse gas

GPRA - Government Performance and Results Act

GPS - Global Positioning System


HAPs - hazardous air pollutants

HMIS - Hazardous Materials Information System

HPMS - Highway Performance Monitoring System

HSR - high-speed rail

HTF - Highway Trust Fund


ICC - Interstate Commerce Commission

INS - Immigration and Naturalization Service

IPCC - Intergovernmental Panel on Climate Change

ISTEA - Intermodal Surface Transportation Efficiency Act

IT - information technology

ITDB - Intermodal Transportation Database

ITS - intelligent transportation system


LNG - liquefied natural gas

LPG - liquefied petroleum gas

LTV - light trucks and vans


MARAD - Maritime Administration

MMLD - Merchant Mariner Licensing Documentation

mmtc - million metric tons of carbon

mpg - miles per gallon

mph - miles per hour

MPO - metropolitan planning organization

MSATs - mobile source air toxics

MSP Maritime Security Programs

MSW - municipal solid waste

MTBE - methyl-tertiary-butyl-ether


NAFTA - North American Free Trade Agreement

NASS - GES National Automotive Sampling System General Estimates System

NDRF - National Defense Reserve Fleet

NEC - Northeast Corridor

NHIS-D - National Health Interview Survey on Disability

NHTSA - National Highway Traffic Safety Administration

NO2 - nitrogen dioxide

NOX - nitrogen oxides

NPIAS - National Plan of Integrated Airport Systems

NPL - National Priorities List

NPTS - Nationwide Personal Transportation Survey

NTL - National Transportation Library


OPEC - Organization of Petroleum Exporting Countries

OPS - Office of Pipeline Safety

ORNL - Oak Ridge National Laboratory

OSRA - Ocean Shipping Reform Act


PCCIP - President's Commission on Critical Infrastructure Protection

PFD - personal flotation device

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

PSC - Port State Control

PSR - Present Serviceability Rating

PTC - positive train control

PUV - personal-use vehicle


quads - quadrillion


RFG - reformulated gasoline

ROR - run-off-the-road

RRF - Ready Reserve Fleet

RSPA - Research and Special Programs Administration


SCTG - Standard Classification of Transported Goods

SO2 - sulfur dioxide

SSI - Supplemental Security Income

STRAHNET - Strategic Highway Network

SUV - sport utility vehicle


TANF - Temporary Assistance for Needy Families

TEA-21 - Transportation Equity Act for the 21st Century

TEU - 20-foot equivalent container unit

TICSA - Transportation Infrastructure Capital Stock Account

TREAD - Transportation Recall Enhancement, Accountability, and Documentation

TTI - Texas Transportation Institute


UNFCC - United Nations Framework Convention on Climate Change

USCG - U.S. Coast Guard

USGS - U.S. Geological Survey

UST - underground storage tank


vmt - vehicle-miles of travel

VOC - volatile organic compounds


WTS - waste transfer station