List of Common Acronyms
For Transportation Related Topics
ADA Americans with Disabilities Act
ADT Average Daily Traffic
AVL Automatic Vehicle Locator
CAA Clean Air Act (link to EPA's "Plain English Guide")
CAAA Clean Air Act Amendments of 1990
CBD Central Business District
CMAQ Congestion Mitigation and Air Quality funds
CMS Congestion Management System
CNST Construction (phase of a project)
DOT Department of Transportation
E+C Existing plus committed network (used in modeling)
EISEnvironmental Impact Statement
ENG Engineering (phase of a project)
EPAEnvironmental Protection Agency
FAAFederal Aviation Administration
FAU Federal-Aid Urban
FHWAFederal Highway Administration
FRA Federal Railroad Administration
FTA Federal Transit Administration
FY Fiscal Year (federal, runs from October to September)
GISGeographic Information Systems
HOV Highway Performance Monitoring System
HPMSHighway Performance Monitoring System
IM Interstate Maintenance funds
ISTEA Intermodal Surface Transportation Efficiency Act of 1991
ITS Intelligent Transportation Systems
IVHS Intelligent Vehicle and Highway Systems (former term for ITS)
LOS Level of Service -- performance measure
LRTP 
Long Range Transportation Plan
MPO Metropolitan Planning Organization
NEPANational Environmental Policy Act
NHSNational Highway System funds
NOxNitrogen Oxides (ozone-causing pollutants)
PE Preliminary Engineering (phase of a project)
ROW Right-of-Way (phase of a project)
RTARegional Transportation Authorit
SIPState Implementation Plan for achieving air quality goals
SR State Route
STA State gas tax funds
STIPStatewide Transportation Improvement Program
STPSurface Transportation Program funds
TAZ Traffic Analysis Zone (used in modeling)
TCC Technical Coordinating Committee
TDMTransportation Demand Management (also called Transportation Control Measures, or TCMs)
TDOTTennessee Department of Transportation
TEA-21Transportation Equity Act for the 21st Century
TIPTransportation Improvement Program
TMA Transportation Management Association
TSM Transportation System Management
UPWP Unified Planning Work Program
US DOTUnited States Department of Transportation
V/C Volume to Capacity ratio - measures roadway congestion
VMTVehicle Miles Traveled
VOCVolatile Organic Compounds (air pollutants)
