
| AAM | Advanced Air Mobility |
| ADA | Americans with Disabilities Act |
| AIP | Airport Improvement Program |
| AOC | Airport Operations Center |
| APA | American Planning Association |
| API | Application Programming Interface |
| APTA | American Public Transit Association |
| ASAP | All Stations Accessibility Program |
| ATP | Airport Terminal Program |
| ATTAIN | Advanced Transportation Technologies and Innovation |
| AV | Automated Vehicle |
| AVL | Automatic Vehicle Location |
| BART | Bay Area Rapid Transit |
| BEB | Battery Electric Bus |
| CDS | Curb Data Specification |
| CFI | Charging and Fueling Infrastructure |
| CM/GC | Construction Management/General Contractor |
| CMAQ | Congestion Mitigation and Air Quality Improvement |
| COOP | Continuous Order of Operations Plan |
| CRISI | Consolidated Rail Infrastructure and Safety Improvements |
| CV | Connected Vehicle |
| DB | Design–Build |
| DBB | Design–Bid–Build |
| DBOM | Design–Build–Operate–Maintain |
| DEIS | Draft Environmental Impact Statement |
| EV | Electric Vehicle |
| FFY | Federal Fiscal Year |
| FHV | For-Hire Vehicle |
| GTFS | General Transit Feed Specification |
| HSIP | Highway Safety Improvement Program |
| IATA | International Air Transport Association |
| IIJA | Infrastructure Investment and Jobs Act |
| INFRA | Nationally Significant Multimodal Freight and Highway Program |
| ISTEA | Intermodal Surface Transportation Efficiency Act of 1991 |
| ITE | Institute of Transportation Engineers |
| KPI | Key Performance Indicator |
| LPR | License Plate Reader |
| MaaS | Mobility as a Service |
| MARAD | Maritime Administration |
| MARTA | Metropolitan Atlanta Regional Transit Authority |
| MassDOT | Massachusetts Department of Transportation |
| MBTA | Massachusetts Bay Transportation Authority |
| MDS | Mobility Data Specification |
| MnDOT | Minnesota Department of Transportation |
| MPO | Metropolitan Planning Organization |
| NACTO | National Association of City Transportation Officials |
| NAE | Neighborhood Access and Equity |
| NCRRP | National Cooperative Rail Research Program |
| NEVI | National Electric Vehicle Infrastructure |
| NOFO | Notice of Funding Opportunity |
| NY TLC | City of New York Taxi and Limousine Commission |
| P3 | Public–Private Partnership |
| PAB | Private Activity Bond |
| PANYNJ | Port Authority of New York and New Jersey |
| PAS | Planners Advisory Service |
| PDB | Progressive Design–Build |
| PFC | Passenger Facility Charge |
| PIDP | Port Infrastructure Development Program |
| RACI | Responsible Accountable Consulted Informed |
| RAISE | Rebuilding American Infrastructure with Sustainability and Equity |
| RRIF | Railroad Rehabilitation and Improvement Financing |
| RSA | Road Safety Audit |
| RTD | Regional Transit District (Denver) |
| SANDAG | San Diego Association of Governments |
| SAV | Shared Automated Vehicle |
| SIB | State Infrastructure Bank |
| SMART | Strengthening Mobility and Revolutionizing Transportation |
| SS4A | Safe Streets and Roads for All |
| SUMC | Shared Use Mobility Center |
| TCQSM | Transit Capacity and Quality of Service Manual |
| TIF | Tax Increment Financing |
| TIFIA | Transportation Infrastructure Finance and Innovation Act |
| TMA | Transportation Management Association |
| TNC | Transportation Network Company |
| TOD | Transit-Oriented Development |
| UAM | Urban Air Mobility |
| UN | United Nations |
| VTOL | Vertical Takeoff and Landing |
| ZEB | Zero-Emission Bus |