List of Abbreviations

List of Abbreviations

AAR Association of American Railroads
ATA American Trucking Association
BEA Bureau of Economic Analysis
BTS Bureau of Transportation Statistics
CB U.S. Census Bureau
CBP U.S. Customs and Border Protection
dwt deadweight tons
FHWA Federal Highway Administration
FRA Federal Railroad Administration
GAO U.S. Government Accountability Offi ce
GDP gross domestic product
HTS harmonized tariff schedule
ICC International Chamber of Commerce
JOC Journal of Commerce
MARAD Maritime Administration
NCHRP National Cooperative Highway Research Program
NRC National Research Council
PIERS Port Import and Export Reporting Service
RITA Research and Innovative Technology Administration
TEU twenty-foot equivalent container unit
TRB Transportation Research Board
TSA Transportation Security Administration
TSI Transportation Services Index
TTI Texas Transportation Institute
TWIC Transportation Worker Identification Credential
USCG U.S. Coast Guard
USDHS U.S. Department of Homeland Security
USDOC U.S. Department of Commerce
USDOE U.S. Department of Energy
USDOT U.S. Department of Transportation