| APPA | American Public Power Association |
| APTA | American Public Transportation Association |
| BEB | battery electric bus |
| CATS | Charlotte Area Transit System |
| Co-Ops | Rural Electric Cooperative |
| DESS | Duke Energy Sustainable Solutions |
| EEI | Edison Electric Institute |
| EPA | Environmental Protection Agency |
| EPC | engineering, procurement and construction |
| EV | electric vehicle |
| EVSE | electric vehicle supply equipment |
| FCEB | fuel cell electric bus |
| FERC | Federal Energy Regulatory Commission |
| FTA | Federal Transit Administration |
| HCE | Holy Cross Energy |
| IIJA | Infrastructure Investment and Jobs Act |
| IOU | investor-owned utility |
| kWh | kilowatt hour |
| Low-No Program | Low or No Emission Grant Program |
| MTS | San Diego Metropolitan Transit System |
| Munis | municipal public power utilities |
| NRECA | National Rural Electric Cooperative Association |
| OEM | original equipment manufacturer |
| PSTA | Pinellas Suncoast Transit Authority |
| PUC | public utility commission |
| RFTA | Roaring Fork Transportation Authority |
| SDG&E | San Diego Gas & Electric |
| TCRP | Transit Cooperative Research Program |
| TOU | time of use |
| Xcel | Xcel Energy |
| ZEB | Zero-emission bus |
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Abbreviations and acronyms used without definitions in TRB publications:
| A4A | Airlines for America |
| AAAE | American Association of Airport Executives |
| AASHO | American Association of State Highway Officials |
| AASHTO | American Association of State Highway and Transportation Officials |
| ACI–NA | Airports Council International–North America |
| ACRP | Airport Cooperative Research Program |
| ADA | Americans with Disabilities Act |
| APTA | American Public Transportation Association |
| ASCE | American Society of Civil Engineers |
| ASME | American Society of Mechanical Engineers |
| ASTM | American Society for Testing and Materials |
| ATA | American Trucking Associations |
| CTAA | Community Transportation Association of America |
| CTBSSP | Commercial Truck and Bus Safety Synthesis Program |
| DHS | Department of Homeland Security |
| DOE | Department of Energy |
| EPA | Environmental Protection Agency |
| FAA | Federal Aviation Administration |
| FAST | Fixing America’s Surface Transportation Act (2015) |
| FHWA | Federal Highway Administration |
| FMCSA | Federal Motor Carrier Safety Administration |
| FRA | Federal Railroad Administration |
| FTA | Federal Transit Administration |
| GHSA | Governors Highway Safety Association |
| HMCRP | Hazardous Materials Cooperative Research Program |
| IEEE | Institute of Electrical and Electronics Engineers |
| ISTEA | Intermodal Surface Transportation Efficiency Act of 1991 |
| ITE | Institute of Transportation Engineers |
| MAP-21 | Moving Ahead for Progress in the 21st Century Act (2012) |
| NASA | National Aeronautics and Space Administration |
| NASAO | National Association of State Aviation Officials |
| NCFRP | National Cooperative Freight Research Program |
| NCHRP | National Cooperative Highway Research Program |
| NHTSA | National Highway Traffic Safety Administration |
| NTSB | National Transportation Safety Board |
| PHMSA | Pipeline and Hazardous Materials Safety Administration |
| RITA | Research and Innovative Technology Administration |
| SAE | Society of Automotive Engineers |
| SAFETEA-LU | Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (2005) |
| TCRP | Transit Cooperative Research Program |
| TEA-21 | Transportation Equity Act for the 21st Century (1998) |
| TRB | Transportation Research Board |
| TSA | Transportation Security Administration |
| U.S. DOT | United States Department of Transportation |
