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Abbreviations and Acronyms
| AAA | American Automobile Association |
| AAAFTS | AAA Foundation for Traffic Safety |
| AASHTO | American Association of State Highway and Transportation Officials |
| ADA | Americans with Disabilities Act |
| ALEDA | Advanced Loop Event Data Analyzer |
| APCO | Association of Public Safety Communications Officials International (APCO International) |
| APC | automated passenger counting |
| API | application programming interface |
| APTA | American Public Transportation Association |
| ARTBA | American Road and Transportation Builders Association |
| ASM | acoustical signature monitoring |
| AVL | automatic vehicle location |
| BRT | Bus Rapid Transit |
| CABS | Campus Area Bus System |
| CAIT | Center for Advanced Infrastructure and Transportation Caltrans California DOT |
| CFIRE | National Center for Freight and Infrastructure Research and Education |
| CID | Controller Interface Device |
| CIFTS | Center for Intermodal Freight Transportation Studies |
| CMS | Center for Multimodal Solutions for Congestion Mitigation |
| CSC | Clean Snowmobile Challenge |
| CSU-UTC | Cleveland State University Transportation Center |
| CTIS | Center for Transportation Infrastructure and Safety |
| CTL | Campus Transit Lab (OSU) |
| CTME | Center for Transportation and Materials Engineering |
| CUTC | Council of University Transportation Centers |
| DCT | Delaware Center for Transportation |
| DEER | Driving Evaluation, Education, and Research Center |
| DOT | Department of Transportation |
| E3 | Energy, Environment, and Education |
| EMC | electromagnetic compatibility |
| EMS | emergency medical services |
| ESITAC | Eastern Seaboard Intermodal Transportation Applications Center |
| FDOT | Florida Department of Transportation |
| FHWA | Federal Highway Administration |
| FRP | fiber-reinforced polymer |
| FTA | Federal Transit Administration |
| GHG | greenhouse gas |
| GIFT | Geospatial Intermodal Freight Transportation |
| GIS | geographic information system |
| GL MTS | Great Lakes Maritime Information Delivery System |
| GPS | global positioning system |
| GTI/UTC | Georgia Transportation Institute, University Transportation Center |
| HIG | Honda Initiation Grant |
| HOT | high-occupancy toll |
| HOV | high-occupancy vehicle |
| IDOT | Idaho Department of Transportation |
| IPCs | interpenetrating phase composites |
| ISTEA | Intermodal Surface Transportation Efficiency Act of 1991 |
| ITI | Intermodal Transportation Institute |
| ITS | intelligent transportation systems |
| LPS | Laboratory for Port Security (CAIT) |
| LTBP | Long-Term Bridge Performance |
| MDOT | Michigan Department of Transportation |
| MATC | Mid-America Transportation Center |
| MBTC | Mack-Blackwell National Rural Transportation Center |
| M-CASTL | Michigan Center for Advancing Safe Transportation Throughout the Lifespan |
| MDSS | Maintenance Decision Support System |
| METRANS | National Center for Metropolitan Transportation Research |
| Missouri S&T | Missouri University of Science and Technology |
| MiSTI | Materials in Sustainable Transportation Infrastructure |
| MIT | Massachusetts Institute of Technology |
| MPO | metropolitan planning organization |
| MTC | Midwest Transportation Consortium |
| MTI | Mineta Transportation Institute |
| MVTA | Minnesota Valley Transit Authority |
| NASA | National Aeronautics and Space Administration |
| NCHRP | National Cooperative Highway Research Program |
| NCIT | National Center for Intermodal Transportation |
| NCTR | National Center for Transit Research |
| NDE | nondestructive evaluation |
| NEUTC | New England Transportation Center |
| NIATT | National Institute for Advanced Transportation Technology |
| NOAA | National Oceanic and Atmospheric Administration |
| NRI | Network Robustness Index |
| NTAD | National Transportation Atlas Database |
| NTC | National Transportation Center |
| NUF | National Urban Freight |
| NYCDOT | New York City DOT |
| NYMTC | New York Metropolitan Transportation Council |
| OTREC | Oregon Transportation Research and Education Consortium |
| OSU | Ohio State University |
| OTC | Ohio Transportation Consortium |
| PCBs | polychorinated biphenyls |
| PHEV | plug-in hybrid electric vehicle |
| PEM | proton exchange membrane |
| PORTAL | Portland Transportation Archive Listing |
| RFID | radiofrequency identification |
| RITA | Research and Innovative Technology Administration |
| SAE | Society of Automotive Engineers |
| SAFETEA-LU | Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users |
| SHM | Structural Health Monitoring |
| SWUTC | Southwest Region University Transportation Center |
| STC | Southeastern Transportation Center |
| STEWARD | Statewide Transportation Engineering Warehouse for Archived Regional Data |
| SWARM | System-Wide Adaptive Ramp Metering System |
| TAD | Travel Assistant Device |
| TDM | Transportation Demand Management |
| TEA-21 | Transportation Equity Act for the 21st Century |
| TFO | Transportation Funding Options |
| TOC | Traffic Operations Center |
| TransNow | Transportation Northwest |
| TRB | Transportation Research Board |
| TSA | Transportation Security Administration |
| TTI | Texas Transportation Institute |
| UAB | University of Alabama at Birmingham |
| UMTRI | University of Michigan Transportation Institute |
| URITC | University of Rhode Island Transportation Center |
| USDOT | U.S. Department of Transportation |
| usRAP | U.S. Road Assessment Program |
| UTA | Utah Transit Authority |
| UTC | University Transportation Center |
| UTCM | University Transportation Center for Mobility |
| UTRC2 | Region II University Transportation Research Center |
| V/C | volume-to-capacity |
| VMT | vehicle-miles traveled |
| VOCs | volatile organic compounds |
| VTRC | Virginia Transportation Research Council |
| VTS | Vessel Traffic Services |
| WSU | Washington State University |
| WTI | Western Transportation Institute |