An alphabetical listing of all acronyms used in the Maryland Statewide ITS Architecture document.
| AOC | Authority Operations Center |
| ASTM | American Society for Testing and Materials |
| ATIS | Advanced Traveler Information Systems |
| ATR | Automatic Traffic Recorder |
| AVCM | ATM Video Control Manager |
| AVL | Automatic Vehicle Location |
| BRT | Bus-Rapid Transit |
| BWI | Baltimore-Washington International |
| C2C | Center-to-Center |
| CAD | Computer Aided Dispatch |
| CapWIN | Capital Wireless Information Net |
| CCTV | Closed-Circuit Television |
| CHART | Coordinated Highways Action Response Team |
| CTP | Consolidated Transportation Plan |
| CVISN | Commercial Vehicle Information Systems and Networks |
| CVO | Commercial Vehicle Operations |
| DDOT | District Department of Transportation (Washington, D.C) |
| DEO | Division of Emergency Operations |
| DPW (&T) | Department of Public Works (& Transportation) |
| DVR | Digital Video Recording |
| DMS | Dynamic Message Sign |
| EMS | Emergency Medical Services |
| EOC | Emergency Operations Center |
| EORS | Emergency Operations Reporting System |
| ETC | Electronic Toll Collection |
| ETP | Emergency Traffic Patrols |
| ERU | Emergency Response Unit |
| FEMA | Federal Emergency Management Agency |
| FHWA | Federal Highway Administration |
| FITM | Freeway Incident Traffic Management |
| FM | Frequency Modulated |
| GPS | Global Positioning System |
| HAZMAT | Hazardous Materials |
| HAR | Highway Advisory Radio |
| HIB | Hazard Identification Beacon |
| HOT | High-Occupancy Toll |
| HQ | Headquarters |
| IAAP | ITS Architecture Advisory Panel |
| IEEE | Institute of Electrical and Electronics Engineers, Inc. |
| IP | Internet Protocol |
| IRIS | Intelligent Roadside Information System |
| ISDN | Integrated Services Digital Network |
| ISP | Information Service Provider |
| ITS | Intelligent Transportation System(s) |
| LATA | Local Access Transport Area |
| LED | Light Emitting Diode |
| MAA | Maryland Aviation Administration |
| MATOC | Metropolitan Area Transportation Operations Coordination |
| MCD | Motor Carrier Division |
| MD | Maryland |
| MDE | Maryland Department of the Environment |
| MDOT | Maryland Department of Transportation |
| MDSHA | Maryland State Highway Administration |
| MDTA | Maryland Transportation Authority |
| MEMA | Maryland Emergency Management Agency |
| MIDP | Mobile Information Device Profile |
| MIEMMS | Maryland Institute for Emergency Medical Services Systems |
| MITS-WG | Maryland ITS Working Group |
| MMTIS | Multi-modal Traveler Information System |
| MNCPPC | Maryland-National Capital Park and Planning Commission |
| MOU | Memorandum of Understanding |
| MPA | Maryland Port Administration |
| MPO | Metropolitan Planning Organization |
| MPSTOC | McConnell Public Safety Transportation Operations Center (Virginia) |
| MSP | Maryland State Police |
| MTA | Maryland Transit Administration |
| MVA | Motor Vehicle Administration |
| MWCOG | Metropolitan Washington Council of Governments |
| NOC | Network Operations Center |
| NRO | Northern Region Operations (Virginia DOT) |
| NTCIP | National Transportation Communications for ITS Protocol |
| OOTS | Office of Traffic and Safety |
| PDA | Personal Digital Assistants |
| PND | Personal Navigation Devices |
| RITIS | Regional Integrated Transportation Information System |
| RLCSS | Reversible Lane Control Signal System |
| RSVD | Roadside Vehicle Detection |
| RTMS | Remote Traffic Microwave Sensor |
| RWIS | Road Weather Information System |
| SDO | Standards Development Organization |
| SOC | Statewide Operations Center |
| TCP | Transmission Control Protocol |
| TFO | Traffic Field Operations |
| TMC | Traffic (or Transportation) Management Center |
| TMDD | Traffic Management Data Dictionary |
| TOC | Traffic Operations Center |
| TRIP | Traffic Response Information and Partnership (Prince George’s County) |
| TRS | Toll Rate Signs |
| UMD-CATT | University of Maryland Center for Advanced Transportation Technology |
| USDOT | United States Department of Transportation |
| VDOT | Virginia Department of Transportation |
| VEIP | Vehicle Emissions Inspection Program |
| VMS | Variable Message Sign |
| WAN | Wide Area Network |
| WAP | Wireless Application Protocol |
| WMATA | Washington Metropolitan Area Transit Authority |