| AASHTO |
American Association of State Highway and Transportation Officials |
| APTA |
American Public Transportation Association |
| APTS |
Advanced Public Transportation Systems |
| ATIS |
Advanced Traveler Information Systems |
| ATMS |
Advanced Transportation Management Systems |
| BOLO |
Be On the Lookout |
| CAD |
Computer-Aided Dispatch |
| CARS |
Condition Acquisition and Reporting System |
| CCTV |
Closed-Circuit Television |
| CESRS |
California Emergency Services Radio System |
| CHART |
Coordinated Highways Action Response Team |
| CHIN |
California Highway Information Network |
| CMS or DMS |
Changeable Message Sign or Dynamic Message Sign |
| CNN |
Cable News Network |
| CORSIM/TSIS |
Corridor Simulation/Traffic Software Integrated System |
| DEN |
Data Exchange Network |
| DHS |
Department of Homeland Security |
| DPW |
Department of Public Works |
| DOT |
Department of Transportation |
| E-911 |
Emergency 911 |
| EOC |
Emergency Operations Center |
| ETO |
Emergency Transportation Operations |
| EMA |
Emergency Management Agency |
| EMS |
Emergency Medical Services |
| FAA |
Federal Aviation Administration |
| FBI |
Federal Bureau of Investigation |
| FHWA |
Federal Highway Administration |
| FRA |
Federal Railroad Administration |
| FTA |
Federal Transit Administration |
| ICS |
Incident Command System |
| IEN |
Information Exchange Network |
| ISAC |
Information Sharing and Analysis Center |
| ITS |
Intelligent Transportation System |
| HAR |
Highway Advisory Radio |
| HAZMAT or HazMat |
Hazardous Materials |
| HCRS |
Highway Condition Reporting System |
| HOV |
High Occupancy Vehicle |
| HSAS |
Homeland Security Advisory System |
| ICS |
Incident Command System |
| MDT |
Mobile Data Terminals |
| MPO |
Metropolitan Planning Organization |
| MUTCD |
Manual on Uniform Traffic Control Devices |
| NIPC |
National Infrastructure Protection Center |
| NCIC |
National Crime Information Center |
| NWS |
National Weather Service |
| OREMS |
Oak Ridge Evacuation Modeling System |
| PDA |
Personal Data Assistant |
| RWIS |
Roadway Weather Information Systems |
| SOP |
Standard Operating Procedure |
| TIMS |
Traffic Information Management System |
| TRANSCOM |
Transportation Command |
| TMC |
Transportation or Traffic Management Center |
| TMOT |
Transportation Management Operations Technician |
| TTP |
Tactics, Techniques and Procedures |
| US DOT |
United States Department of Transportation |
