| §5303 & §5304 | FTA program funding for multimodal transportation planning (jointly administered with FHWA) in metropolitan areas and States |
| §5307 | FTA program funding for public transportation in Urbanized Areas (i.e. with populations >50,000) |
| §5309 | FTA program funding for capital investments |
| §5310 | FTA program funding for enhanced mobility of seniors and individuals with disabilities |
| §5311 | FTA program funding for rural and small Urban Areas (Non-Urbanized Areas) |
| §5326 | FTA program funding to define “state of good repair” and set standards for measuring the condition of capital assets |
| §5337 | FTA program funding to maintain public transportation in a state of good repair |
| §5339 | FTA program funding for buses and bus facilities |
| 3C Planning | Continuing, Comprehensive, and Cooperative Planning |
| 7th Pot | CDOT’s Strategic Investment Program and projects—originally using S.B. 97-01 funds |
| AADT | Annual Average Daily Traffic |
| AASHTO | American Association of State Highway and Transportation Officials |
| ACP | Access Control Plan |
| ADA | Americans with Disabilities Act of 1990 |
| ADT | Average Daily Traffic (also see AWD) |
| AIS | Agenda Item Summary |
| AMPO | Association of Metropolitan Planning Organizations |
| APCD | Air Pollution Control Division (of the Colorado Department of Public Health and Environment) |
| AQCC | Air Quality Control Commission (of Colorado) |
| ATP | Active Transportation Plan (formerly Non-Motorized Plan) |
| AWD | Average Weekday Traffic (also see ADT) |
| BATS | Berthoud Area Transportation Service |
| BIL | Bipartisian Infrastructure Law (federal legislation aka IIJA, signed November 2021) |
| BRT | Bus Rapid Transit |
| BUILD | Better Utilizing Investments to Leverage Development (the competitive federal grant program that replaced TIGER) |
| CAAA | Clean Air Act Amendments of 1990 (federal) |
| CBE | Colorado Bridge Enterprise funds |
| CDOT | Colorado Department of Transportation |
| CDPHE | Colorado Department of Public Health and Environment |
| CE | Environmental Categorical Exclusion |
| CFY | Calendar Fiscal Year |
| CMAQ | Congestion Mitigation and Air Quality (an FHWA funding program) |
| CMP | Congestion Management Process |
| CNG | Compressed Natural Gas |
| CO | Carbon Monoxide |
| COLT | City of Loveland Transit |
| CPG | Consolidated Planning Grant (combination of FHWA PL & FTA 5303 planning funds) |
| CRP | Carbon Reduction Program (Federal funding source authorized in IIJA/BIL) |
| CTIO | Colorado Transportation Investment Office (formerly HPTE) |
| DBE | Disadvantaged Business Enterprise |
| DMS | Dynamic Message Sign |
| DRCOG | Denver Regional Council of Governments |
| DTD | CDOT Division of Transportation Development |
| DTR | CDOT Division of Transit & Rail |
| EA | Environmental Assessment |
| EIS | Environmental Impact Statement |
| EM | Environmental Mitigation |
| EPA | Environmental Protection Agency |
| FAST Act | Fixing America’s Surface Transportation Act (federal legislation, signed December 2015) |
| FASTER | Funding Advancements for Surface Transportation and Economic Recovery (Colorado’s S.B. 09-108) |
| FASTLANE | Fostering Advancements in Shipping and Transportation for the Long-Term Achievement of National Efficiencies (a competitive federal grant program for freight improvements from 2016-2018, replaced by INFRA) |
| FEIS | Final Environmental Impact Statement |
| FHWA | Federal Highway Administration |
| FNC | Freight Northern Colorado Plan |
| FONSI | Finding of No Significant Impact |
| FRA | Federal Railroad Administration |
| FTA | Federal Transit Administration |
| FY | Fiscal Year (October to September for federal funds; July to June for state funds; January to December for local funds) |
| FFY | Federal Fiscal Year |
| GET | Greeley-Evans Transit |
| GHG | Greenhouse Gas |
| GIS | Geographic Information Systems |
| GOPMT | Goals, Objectives, Performance Measures, and Targets |
| HOV | High Occupancy Vehicle |
| HOT | High Occupancy Toll |
| HPTE | High-Performance Transportation Enterprise (now CTIO) |
| HSIP | Highway Safety Improvement Program |
| HTF | Highway Trust Fund (the primary federal funding source for surface transportation) |
| HUTF | Highway Users Tax Fund (the State’s primary funding source for highways) |
| IIJA | Infrastructure Investment and Jobs Act (federal legislation aka BIL, signed November 2021) |
| I&M or I/M | Inspection and Maintenance program (checking emissions of pollutants from vehicles) |
| INFRA | Infrastructure for Rebuilding America (the competitive federal grant program for freight improvements that replaced FASTLANE) |
| ITS | Intelligent Transportation Systems |
| LCMC | Larimer County Mobility Committee |
| LEP | Limited English Proficiency |
| LRP or LRTP | Long Range Plan or Long Range Transportation Plan |
| LUAM | Land Use Allocation Model |
| MAP-21 | Moving Ahead for Progress in the 21st Century (2012 federal transportation legislation) |
| MAPG | Mobility and Access Priority Group, formerly known as the Senior Transportation Coalition (STC) |
| MMOF | Multimodal Transportation and Mitigation Options Fund (state funds allocated to MPOs and TPRs in SB18-001) |
| MOA | Memorandum of Agreement |
| MOU | Memorandum of Understanding |
| MPA | Metropolitan Planning Area |
| MPO | Metropolitan Planning Organization |
| MST | Model Steering Team |
| MVEB | Motor Vehicle Emissions Budget |
| NAA | Nonattainment Area (for certain air pollutants) |
| NAAQS | National Ambient Air Quality Standards |
| NARC | National Association of Regional Councils |
| NCMC | Northern Colorado Mobility Committee |
| NEPA | National Environmental Policy Act |
| NFRMPO | North Front Range Metropolitan Planning Organization (also known as NFRT & AQPC) |
| NFRT & AQPC | North Front Range Transportation & Air Quality Planning Council (also known as NFRMPO) |
| NHS | National Highway System |
| NMP | Non-Motorized Plan (now Active Transportation plan) |
| NoCo | Northern Colorado Bicycle and Pedestrian Collaborative |
| NOx | Nitrogen Oxides |
| NTD | National Transit Database |
| O3 | Ozone |
| OBD | On-Board Diagnostics (of a vehicle’s engine efficiency and exhaust) |
| PEL | Planning and Environmental Linkages |
| PIP | Public Involvement Plan |
| PL | Federal Planning (funds) |
| PM | Performance Measure |
| PMT | Person Miles Traveled |
| POP | Program of Projects |
| PPP or P3 | Public Private Partnership |
| R4 or R-4 | Region 4 of the Colorado Department of Transportation |
| RACM | Reasonably Available Control Measures |
| RACT | Reasonably Available Control Technology |
| RAQC | Regional Air Quality Council |
| RNMC | Regional Non-Motorized Corridor |
| ROD | Record of Decision |
| ROW | Right-of-way |
| RPP | Regional Priority Program (a funding program of the Transportation Commission of Colorado) |
| RSC | Regionally Significant Corridor |
| RTC | Regional Transit Corridor |
| RTD | Regional Transportation District in the Denver Region or Regional Transportation Director for CDOT Regions |
| RTDM | Regional Travel Demand Model |
| RTP | Regional Transportation Plan |
| SAINT | Senior Alternatives in Transportation |
| SH | State Highway |
| SIP | State Implementation Plan (air quality) |
| SOV | Single Occupant Vehicle |
| SPR | State Planning and Research (federal funds) |
| SRS | Senior Resource Services |
| SRTS or SR2S (see TA) |
Safe Routes to School (a pre-MAP-21 FHWA funding program) |
| STAC | Statewide Transportation Advisory Committee |
| STC | Senior Transportation Coalition (formerly Mobility and Access Priority Group (MAPG)) |
| STIP | Statewide Transportation Improvement Program |
| STBG (previously STP-Metro) | Surface Transportation Block Grant (a FAST Act FHWA funding program) |
| SWC&FRPRC | Southwest Chief & Front Range Passenger Rail Commission |
| TA (previously TAP) | Transportation Alternatives program (an FHWA funding program) |
| TAC | Technical Advisory Committee (of the NFRMPO) |
| TAM | Transit Asset Management or Transportation Asset Management |
| TAZ | Transportation Analysis Zone (used in travel demand forecasting) |
| TC | Transportation Commission of Colorado |
| TDM | Transportation Demand Management |
| TDP | Transit Development Program |
| TIGER | Transportation Investment Generating Economic Recovery (a competitive federal grant program from 2009-2017 replaced by BUILD) |
| TIMP | Traffic Incident Management Plan |
| TIP | Transportation Improvement Program |
| Title VI | U.S. Civil Rights Act of 1964, prohibiting discrimination in connection with programs and activities receiving federal financial assistance |
| TMA | Transportation Management Area (federally-designated place >200,000 population) |
| TOD | Transit Oriented Development |
| TPR | Transportation Planning Region (state-designated planning region) |
| TRAC | Transit & Rail Advisory Committee (for CDOT) |
| TTI | Travel Time Index |
| TTR | Travel Time Reliability |
| TTRI | Travel Time Reliability Index |
| TTTRI | Truck Travel Time Reliability Index |
| TZD | Toward Zero Deaths |
| UFR | Upper Front Range Transportation Planning Region |
| UPWP | Unified Planning Work Program |
| UZA | Urbanized Area |
| USDOT | United States Department of Transportation |
| VMS | Variable Message Sign or Vehicle Messaging Services |
| VMT | Vehicle Miles Traveled |
| VOC | Volatile Organic Compound |
| WCMC | Weld County Mobility Committee |
| YOE | Year of Expenditure |
