| AVO |
Average Vehicle Occupancy |
| AVR |
Average Vehicle Ridership |
| CMAQ |
Congestion Mitigation and Air Quality Improvement Program |
| CO |
Carbon Monoxide |
| CUTR |
Center for Urban Transportation Research |
| DOT |
Department of Transportation |
| ECO |
Employee Commute Options |
| EPA |
Environmental Protection Agency |
| FHWA |
Federal Highway Administration |
| FTA |
Federal Transit Administration |
| HOV |
High Occupancy Vehicle |
| I/M |
Inspection and Maintenance |
| IDAS |
ITS Deployment and Analysis System |
| ITS |
Intelligent Transportation Systems |
| MPO |
Metropolitan Planning Organization |
| MWCOG |
Metropolitan Washington Council of Governments |
| NCTCOG |
North Central Texas Council of Governments |
| NMHC |
Non-Methane Hydrocarbons |
| NOx |
Oxides of Nitrogen |
| PM |
Particulate Matter |
| RAQC |
(Denver) Regional Air Quality Council |
| SMART |
Simplified Model for the Analysis of Regional Travel |
| TAZ |
Traffic Analysis Zone |
| TCM |
Transportation Control Measure |
| TDM |
Travel Demand Management |
| TEA-21 |
Transportation Equity Act for the 21st Century |
| TSM |
Transportation Systems Management |
| TTI |
Texas Transportation Institute |
| VMT |
Vehicle-Miles of Travel |
| VOC |
Volatile Organic Compounds |
