| A | B |
|---|
| ATC | automated toll collection |
| AVI | advanced vehicle identification |
| Caltrans | Californai Department of Transportation |
| CARB | California Air Resources Board |
| CBDs | central business districts |
| CMAQ | Congention Mitigation and Air Quality Improvement Program |
| CPTC | California Private Transportation Corporation |
| CTR | Commute Trip Reduction |
| DOT | Department of Transportation |
| EPACT | Energy Policy Act of 1992 |
| ETC | employee transportation coordinator |
| FAHP | Federal-Aid Highway Program |
| FHWA | Federal Highway Administration |
| FTA | Federal Transit Administration |
| HOV | high-occupancy vehicle |
| ISTEA | Intermodal Surface Transportation Efficiency Act of 1991 |
| ITS | intelligent transportation systems |
| MPO | metropolitan planning organization (generic) |
| NAAQS | national ambient air quality standards |
| PATP | pay-at-the-pump |
| REACH | REduce Emissions and Congestion on Highways |
| SCAG | Southern California Association of Governments |
| SCAQMD | South Coast Air Quality Management District |
| SOV | single-occupancy vehicle |
| HOT | high-occupancy toll |
| STP | surface transportation program |
| TCM | transportation control measure |
| TMA | transportation management area |
| VHT | vehicle hours traveled |
| VMT | vehicle miles traveled |
