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2010 Status of the Nation's Highways, Bridges, and Transit:
Conditions & Performance
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Abbreviations

AASHTO American Association of State Highway and Transportation Officials
ACE Altamont Commuter Express
ADA Americans with Disabilities Act of 1990
ADT average daily traffic
AEO Annual Energy Outlook 2010
APTA American Public Transportation Association
ATM Active Traffic Management
BAB Build America Bond
BAC blood alcohol concentration
BART San Francisco Bay Area Rapid Transit District
BCR benefit-cost ratio
BIRM Bridge Inspectors Reference Manual
BLS Bureau of Labor Statistics
BPI Bid Price Index
BRT Bus Rapid Transit
BTS Bureau of Transportation Statistics
BTU British thermal unit
C&P Conditions and Performance
CAFE Corporate Average Fuel Economy
CAT Climate Action Team, Climate Advisory Team
CATA Central Arkansas Transit Authority
CATS Charlotte Area Transit System
CDOT Connecticut Department of Transportation
CEA Council of Economic Advisers
CEQ Council on Environmental Quality
CFC chlorofluorocarbon
CFR U.S. Code of Federal Regulations
CFS Commodity Flow Survey
CH4 methane
CMAQ Congestion Mitigation and Air Quality
CMTA Capital Metropolitan Transportation Authority
CNT Center for Neighborhood Technology
CO2 carbon dioxide
CO2e CO2 equivalent
COT City of Tucson
CPI Consumer Price Index
CSS context sensitive solution
CTA Chicago Transit Authority
DART Dallas Area Rapid Transit
DHS U.S. Department of Homeland Security
DO directly operated
DOT Department of Transportation
DOT&PF Alaska Department of Transportation and Public Facilities
DTC Delaware Transit Corporation
DTS City and County of Honolulu Department of Transportation Services
EDC Every Day Counts
EIA Energy Information Administration
EPA U.S. Environmental Protection Agency
FAF Freight Analysis Framework
FARS Fatality Analysis Reporting System
FHWA U.S. Federal Highway Administration
FMCSA Federal Motor Carrier Safety Administration
FPM freight performance measurement
FTA Federal Transit Administration
FY fiscal year
g/dL gram per deciliter
GARVEE Grant Anticipation Revenue Vehicle
GCRTA The Greater Cleveland Regional Transit Authority
GDP gross domestic product
GHG greenhouse gas
GIS geographic information system
GP general purpose
GPS Global Positioning System
GreenLITES Green Leadership in Transportation Environmental Sustainability
HART Hillsborough Area Regional Transit Authority
HERS Highway Economic Requirements System
HFC hydrofluorocarbon
HFCS Highway Functional Classification System
HMA hot-mix asphalt
HOT high-occupancy toll
HOV high-occupancy vehicle
HPMS Highway Performance Monitoring System
HPMS-AP HPMS Analytical Process
HRRR High Risk Rural Roads Program
HRT Hampton Roads Transit
HTF Highway Trust Fund
HUD U.S. Department of Housing and Urban Development
ICM Integrated Corridor Management
IDAS ITS Deployment Analysis System
IFTWG Intermodal Freight Technology Working Group
INVEST Infrastructure Voluntary Evaluation Sustainability Tool
IPCC Intergovernmental Panel on Climate Change
IRI International Roughness Index
ISTEA Intermodal Surface Transportation Efficiency Act of 1991
IT Island Transit
ITS intelligent transportation system(s)
King County Metro King County Department of Transportation
KT Kenosha Transit
LACMTA Los Angeles County Metropolitan Transportation Authority
LDV light-duty vehicle
LEED Leadership in Energy and Environmental Design
LID Low Impact Development
LNG liquefied natural gas
LPG liquefied petroleum gas
MARTA Metropolitan Atlanta Rapid Transit Authority
MATA Memphis Area Transit Authority
MBTA Massachusetts Bay Transportation Authority
MCCC Maryland Climate Change Commission
MDT Miami-Dade Transit
Metra Northeast Illinois Regional Commuter Railroad Corporation
METRO Bi-State Development Agency; Metropolitan Transit Authority of
  Harris County, Texas; Metro Regional Transit Authority
Metrolink Southern California Regional Rail Authority
MOVES Motor Vehicle Emission Simulator
mpg miles per gallon
mph miles per hour
MPO metropolitan planning organization
MR&R maintenance, repair, and rehabilitation
MTA Mass Transit Account, Metropolitan Transportation Authority, Maryland Transit Administration
MTA LIRR MTA Long Island Rail Road
MTA-MNCR Metro-North Commuter Railroad Company
MTS San Diego Metropolitan Transit System
MTSI mean time to service interruption
MUNI San Francisco Municipal Railway
N2O nitrous oxide
NBI National Bridge Inventory
NBIAS National Bridge Investment Analysis System
NBIS National Bridge Inspection Standards
NCHRP National Cooperative Highway Research Program
NCTD North County Transit District
NEPA National Environmental Policy Act
NFT Metro Niagara Frontier Transportation Authority
NHCCI National Highway Construction Cost Index
NHS National Highway System
NHTS National Household Travel Survey
NHTSA National Highway Traffic Safety Administration
NICTD Northern Indiana Commuter Transportation District
NIPA U.S. National Income and Product Accounts
NJ TRANSIT New Jersey Transit Corporation
NNEPRA Northern New England Passenger Rail Authority
NOAA National Oceanic and Atmospheric Administration
NOx nitrogen oxide
NORTA New Orleans Regional Transit Authority
NTD National Transit Database
NTPP Nonmotorized Transportation Pilot Program
NYCT MTA New York City Transit
OMB Office of Management and Budget
OSTP Office of Science and Technology Policy
P3 Public-Private Partnership
PAB Private Activity Bond
PATCO Port Authority Transit Corporation
PATH Port Authority Trans-Hudson Corporation
PCJPB Peninsula Corridor Joint Powers Board
PENNDOT Pennsylvania Department of Transportation
PFC perfluorocarbon
PM-10 particulate matter of 10 microns in diameter or smaller
PMT passenger miles traveled
Port Authority Port Authority of Allegheny County
PPI Producer Price Index
PRHTA Puerto Rico Highway and Transportation Authority
PSR Present Serviceability Rating
PT purchase transportation
RAP reclaimed asphalt pavement
RCTC Riverside County Transportation Commission
RPTA Regional Public Transportation Authority
RTA Regional Transportation Authority
RTD Denver Regional Transportation District
RTP Regional Transportation Plan
Sacramento RT Sacramento Regional Transit District
SAFETEA-LU Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users
SCS Sustainable Communities Strategy
SEPTA Southeastern Pennsylvania Transportation Authority
SF6 sulfur hexafluoride
SGR State of Good Repair
SIB State Infrastructure Bank
SIRTOA Staten Island Rapid Transit Operating Authority
SQC Synthesis, Quantity, and Condition
ST Central Puget Sound Regional Transit Authority
STRAHNET Strategic Highway Network
SUV sports utility vehicle
TEA-21 Transportation Equity Act for the 21st Century
TEAM Transit Electronic Award Management
TERM Transit Economic Requirements Model
The T Fort Worth Transportation Authority
TIFIA Transportation Infrastructure and Finance Innovation Act
TIGER Transportation Investment Generating Economic Recovery
TIGGER Transit Investment for Greenhouse Gas and Energy Reduction
TMC traffic management center
TOD Transit-Oriented Development
TRB Transportation Research Board
TriMet Tri-County Metropolitan Transportation District of Oregon
TRI-Rail South Florida Regional Transportation Authority
TTI Texas Transportation Institute
TVT Traffic Volume Trends
UCR Urban Congestion Report
UN United Nations
U.S.C. United States Code
U.S. DOT United States Department of Transportation
UTA Utah Transit Authority
UZA urbanized area
Valley Metro City of Phoenix Public Transit Department
V/SF volume to service flow
VHT vehicle-hours of travel
VII Vehicle Infrastructure Integration
VIUS Vehicle Inventory and Use Survey
VMT vehicle miles traveled
VRE Virginia Railway Express
VRM vehicle revenue mile
VSL variable speed limit
VTA Santa Clara Valley Transportation Authority
WMA warm mix asphalt
WMATA Washington Metropolitan Area Transit Authority
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