Regulatory Authorities
- Agence de Financement des Infrastructures de Transport de France (AFIT France)
- Agência Nacional de Transportes Terrestres (ANTT), Brazil
- Alameda Corridor Transportation Authority
- Andalucía Public Works Agency
- ATAC SpA, planning authority
- Auckland Transport
- AustralAsia Railway Corp (AARC)
- Australian Transport Safety Bureau (ATSB)
- Autoritat del Transport Metropolità (ATM), Barcelona
- Autoritatea Feroviara Romana (AFER)
- Autorité de Régulation des Transports (ART)
- Autorité Française de Sécurité Ferroviaire (EPSF)
- Bayerische Eisenbahngesellschaft mbH (BEG)
- Behörde für Stadtentwicklung und Umwelt (BSU Hamburg)
- Bundesamt für Verkehr (BAV)
- Bundeseisenbahnvermögen (BEV, Germany)
- Bundesministerium für Digitales und Verkehr (BMDV, Germany)
- Bundesnetzagentur für Elektrizität, Gas, Telekommunikation, Post und Eisenbahnen
- Bundesstelle für Eisenbahnunfalluntersuchung (BEU)
- Bureau d’Enquêtes sur les Accidents de Transport Terrestre (BEA-TT)
- Bureau of Infrastructure, Transport & Regional Economics (BITRE)
- California Department of Transportation
- California High-Speed Rail Authority
- Canadian Transportation Agency (CTA)
- Capitol Corridor Joint Powers Authority
- Chengdu Railway Administration
- Colorado Department of Transportation
- Comision Nacional de Regulacion del Transporte (CNRT)
- Commission for Railway Regulation (CRR)
- Connecticut Department of Transportation (CDoT)
- Conseil Régional Auvergne – Rhône-Alpes
- Conseil Régional d’Ile-de-France
- Conseil Régional de Bourgogne – Franche-Comté
- Conseil Régional de Bretagne
- Conseil Regional de Grand-Est
- Conseil Régional de Normandie
- Conseil Régional de Nouvelle-Aquitaine
- Conseil Régional du Centre – Val de Loire
- Conseil Régional Hauts-de-France
- Conseil Régional Occitanie
- Conseil Régional Pays de la Loire
- Conseil Régional Provence – Alpes – Côte d’Azur
- Consorcio de Transportes de Bizkaia (CTB)
- Consorcio Regional de Transportes de Madrid (CRTM)
- Croissance Rail
- Delaware Department of Transportation
- Department for Infrastructure & Transport (DIT), South Australia
- Department for Infrastructure (Northern Ireland)
- Department for Transport, UK (DfT)
- Department of Infrastructure, Environment & Urban Planning, Monaco
- Department of Infrastructure, Planning & Logistics (DIPL), Northern Territory
- Department of Infrastructure, Transport, Regional Development, Communication & the Arts, Australia
- Department of State Growth, Tasmania
- Department of Transport & Main Roads (TMR), Queensland
- Department of Transport (DoT), Western Australia
- Department of Transport, Ireland
- Department of Transport, South Africa
- Department of Transportation, Philippines
- Department of Transportation, USA
- Der Senator für Klimaschutz, Umwelt, Mobilität, Stadtentwicklung und Wohnungsbau (Bremen)
- Eisenbahn-Bundesamt (EBA)
- European Commission Directorate General for Mobility & Transport (DG-MOVE)
- European Rail Research Advisory Council (ERRAC)
- European Union Agency for Railways (ERA)
- Federal Agency for Rail Transport (Roszheldor), Russia
- Federal Department of the Environment, Transport, Energy & Communications, Switzerland (UVEK)
- Federal Ministry of Transportation, Nigeria
- Federal Public Service (FPS) Mobility & Transport
- Federal Railroad Administration (FRA)
- Federal Transit Administration
- Femern A/S
- Finnish Transport & Communications Agency (Traficom)
- Finnish Transport Infrastructure Agency (FTIA)
- Florida Department of Transportation
- Forum Train Europe (FTE)
- Georgia Regional Transportation Authority
- Geschäftsstelle der Verkehrsministerkonferenz (VMK)
- Guangzhou Railway Administration
- Hamburger Verkehrsverbund GmbH (HVV)
- High Speed Rail Corporation of India Ltd
- Hong Kong Transport Department
- HS2 Ltd
- Île-de-France Mobilités
- Infra SA
- Infraestructures Ferroviàries de Catalunya (Ifercat)
- Infrastructure Australia
- Inspectie Leefomgeving en Transport (ILT), Netherlands
- Instituto da Mobilidade e dos Transportes Terrestres (IMT)
- International Transport Forum (ITF)
- Japan Railway Construction, Transport & Technology Agency (JRTT)
- Jernbanedirektoratet
- Kommission für den Eisenbahnverkehr (RailCom)
- Land Transport Authority (LTA), Singapore
- Landesnahverkehrsgesellschaft Niedersachsen mbH (LNVG)
- Lanzhou Railway Administration
- LEA Gesellschaft für Landeseisenbahnaufsicht mbH
- Major Transport Infrastructure Authority (MTIA)
- Massachusetts Department of Transportation (MassDOT)
- Merseytravel
- Metrolinx
- Métropole d’Aix-Marseille-Provence
- Metropolitan Transportation Authority (MTA)
- Midlands Connect
- Ministerium für Infrastruktur und Landwirtschaft, Thüringen (TMIL)
- Ministerium für Wirtschaft, Innovation, Digitales und Energie (MWIDE, Saarland)
- Ministry for Infrastructure & Justice, Liechtenstein
- Ministry of Capital Investments, Montenegro
- Ministry of Climate Change, Environment, Energy, Mobility, Innovation & Technology (BMK), Austria
- Ministry of Communications & Transport, Bosnia & Herzegovina
- Ministry of Communications, Infrastructure & Housing, Guatemala
- Ministry of Construction & Transport, Hungary
- Ministry of Construction, Transport & Infrastructure, Serbia
- Ministry of Construction, Vietnam
- Ministry of Digital Development & Transport, Azerbaijan
- Ministry of Ecology, Sustainable Development & Energy, France
- Ministry of Economic Affairs & Communications, Estonia
- Ministry of Economic Development & Digitalization, Moldova
- Ministry of Industry & Construction, Turkmenistan
- Ministry of Industry & Infrastructure Development, Kazakhstan
- Ministry of Infrastructure & Energy, Albania
- Ministry of Infrastructure & Land Transport, Senegal
- Ministry of Infrastructure & Transport, Benin
- Ministry of Infrastructure & Transport, Djibouti
- Ministry of Infrastructure & Transport, Italy
- Ministry of Infrastructure & Transport, Mauritania
- Ministry of Infrastructure & Transport, Togo
- Ministry of Infrastructure & Water Management (IeNw) , Netherlands
- Ministry of Infrastructure, Brazil
- Ministry of Infrastructure, Kosovo
- Ministry of Infrastructure, Poland
- Ministry of Infrastructure, Portugal
- Ministry of Infrastructure, Slovenia
- Ministry of Infrastructure, Transport & Networks, Greece
- Ministry of Infrastructure, Ukraine
- Ministry of Land, Infrastructure & Transport (MOLIT), South Korea
- Ministry of Land, Infrastructure, Transport & Tourism (MLIT), Japan
- Ministry of Mobility & Public Works (MMTP), Luxembourg
- Ministry of Physical Infrastructure & Transport, Nepal
- Ministry of Public Works & Communications, Dominican Republic
- Ministry of Public Works & Communications, Paraguay
- Ministry of Public Works & Meteorological Services, Fiji
- Ministry of Public Works & Transport, Algeria
- Ministry of Public Works & Transport, Cambodia
- Ministry of Public Works & Transport, Costa Rica
- Ministry of Public Works & Transport, Laos
- Ministry of Public Works & Transport, Mali
- Ministry of Public Works (MOP), El Salvador
- Ministry of Public Works, Eswatini
- Ministry of Public Works, Panama
- Ministry of Public Works, Services & Housing, Bolivia
- Ministry of Public Works, Transport & Telecommunications, Côte d’Ivoire
- Ministry of Railways, Bangladesh
- Ministry of Railways, India
- Ministry of Railways, North Korea
- Ministry of Railways, Pakistan
- Ministry of Regional Development & Infrastructure, Georgia
- Ministry of Roads & Transport Development, Mongolia
- Ministry of Roads & Transport, Kenya
- Ministry of Roads & Urban Development, Iran
- Ministry of Rural Affairs & Infrastructure, Sweden
- Ministry of Science, Energy, Telecommunications & Transport (MSETT), Jamaica
- Ministry of the Sea, Transport & Infrastructure, Croatia
- Ministry of Transport & Civil Aviation, Congo Republic
- Ministry of Transport & Communications, Belarus
- Ministry of Transport & Communications, Botswana
- Ministry of Transport & Communications, Bulgaria
- Ministry of Transport & Communications, Congo Democratic Republic
- Ministry of Transport & Communications, Ethiopia
- Ministry of Transport & Communications, Finland
- Ministry of Transport & Communications, Kyrgyzstan
- Ministry of Transport & Communications, Lithuania
- Ministry of Transport & Communications, Mozambique
- Ministry of Transport & Communications, Myanmar
- Ministry of Transport & Communications, North Macedonia
- Ministry of Transport & Communications, Peru
- Ministry of Transport & Communications, Tajikistan
- Ministry of Transport & Communications, Venezuela
- Ministry of Transport & Communications, Zimbabwe
- Ministry of Transport & Construction, Slovakia
- Ministry of Transport & Highways, Sri Lanka
- Ministry of Transport & Infrastructure, Romania
- Ministry of Transport & Infrastructure, Turkey
- Ministry of Transport & Logistics, Morocco
- Ministry of Transport & Meteorology, Madagascar
- Ministry of Transport & Public Works, Malawi
- Ministry of Transport & Public Works, Uruguay
- Ministry of Transport & Road Safety, Israel
- Ministry of Transport & Sustainable Mobility, Spain
- Ministry of Transport & Telecommunications, Chile
- Ministry of Transport (SM), Latvia
- Ministry of Transport, Angola
- Ministry of Transport, Argentina
- Ministry of Transport, Cameroon
- Ministry of Transport, Colombia
- Ministry of Transport, Communication & IT, Armenia
- Ministry of Transport, Communications & Information Technology, Oman
- Ministry of Transport, Cuba
- Ministry of Transport, Czech Republic
- Ministry of Transport, Denmark
- Ministry of Transport, Eritrea
- Ministry of Transport, Gabon
- Ministry of Transport, Ghana
- Ministry of Transport, Guinea
- Ministry of Transport, Indonesia
- Ministry of Transport, Iraq
- Ministry of Transport, Jordan
- Ministry of Transport, Malaysia
- Ministry of Transport, New Zealand
- Ministry of Transport, Qatar
- Ministry of Transport, Russia
- Ministry of Transport, Saudi Arabia
- Ministry of Transport, Singapore
- Ministry of Transport, Sudan
- Ministry of Transport, Syria
- Ministry of Transport, Tanzania
- Ministry of Transport, Thailand
- Ministry of Transport, Tunisia
- Ministry of Transport, Urban Mobility & Road Safety, Burkina Faso
- Ministry of Transport, Works, Supply & Communications, Zambia
- Ministry of Transportation & Communications, Taiwan
- Ministry of Transportation & Public Works, Ecuador
- Ministry of Transportation, China
- Ministry of Transportation, Egypt
- Ministry of Works & Transport, Namibia
- Ministry of Works & Transport, Trinidad & Tobago
- Ministry of Works & Transport, Uganda
- Mitteldeutscher Verkehrsverbund GmbH (MDV)
- Mulhouse Alsace Agglomération (m2A)
- Münchner Verkehrs- und Tarifverbund GmbH (MVV München)
- Nahverkehr Rheinland GmbH (NVR)
- Nahverkehrsgesellschaft Baden-Württemberg mbH (NVBW)
- Nahverkehrsservice Sachsen-Anhalt GmbH (NASA)
- Nahverkehrsverbund Schleswig-Holstein GmbH
- National Agency for Railway Safety & Road and Motorway Infrastructure
- National Authority for Tunnels (NAT), Egypt
- National Infrastructure Commission (NIC)
- National Infrastructure Development Co Ltd (NIDCO), Trinidad & Tobago
- National Railway Administration, China
- National Transport Authority (NTA), Ireland
- National Transportation Safety Board
- Nexus
- Nordhessischer VerkehrsVerbund (NVV)
- NZ Transport Agency (NZTA)
- Office of Rail & Road, UK (ORR)
- Office of the National Rail Safety Regulator (ONRSR), Australia
- Ositran
- Rail Accident Investigation Branch (RAIB)
- Rail Delivery Group (RDG)
- Rail Safety & Standards Board Ltd (RSSB)
- RailNetEurope (RNE)
- Railway & Public Transportation Authority, Lebanon
- Railway Administration Executive Agency (RAEA), Bulgaria
- Railway Safety Regulator (RSR), South Africa
- Region Hannover
- Regional Transportation Authority of Northeastern Illinois
- Regionalverband Großraum Braunschweig (RGB)
- Rhein-Main-Verkehrsverbund GmbH (RMV)
- Roads & Transport Authority (Dubai)
- Royal Ministry of Transport & Communications, Norway
- Sabah Ministry of Infrastructure Development, Malaysia
- Schienen-Control GmbH (SCG)
- Schieneninfrastruktur-Dienstleistungsgesellschaft mbH (SCHIG)
- Schweizerische Unfalluntersuchungsstelle Bahnen und Schiffe (SUST)
- Scottish Government
- Secretariat of Infrastructure, Transport & Communications, Mexico
- Secretariat of Public Works, Transport & Housing, Honduras
- Senatsverwaltung für Mobilität, Verkehr, Klimaschutz und Umwelt
- Shanghai Railway Administration
- Shenyang Railway Administration
- Société Régionale Wallonne du Transport (SRWT)
- South Yorkshire Mayoral Combined Authority (SYMCA)
- Statens jernbanetilsyn (SJT)
- Strathclyde Partnership for Transport (SPT)
- Surface Transportation Board (STB)
- Sydney Metro Statutory Authority
- Taiwan Railway Bureau (RB)
- Technical Regulatory Authority, Estonia
- Texas Department of Transportation
- Thüringer Landesamt für Bau und Verkehr (TLBV)
- Trafikselskabet Movia
- Trafikstyrelsen
- Translink (Vancouver)
- TransLink Division, Queensland
- Transport & Logistics Bureau (Hong Kong)
- Transport Accident Investigation Commission (TAIC), New Zealand
- Transport Canada
- Transport Focus
- Transport for Greater Manchester (TfGM)
- Transport for London (TfL)
- Transport for NSW
- Transport for the North
- Transport for Victoria (TfV)
- Transport for Wales (TfW)
- Transport for West Midlands (TfWM)
- Transport Infrastructure Ireland (TII)
- Transport Scotland
- Transportation Research Board (TRB)
- Transportation Safety Board of Canada (TSB)
- Transportation Security Administration
- Transportstyrelsen
- Urzad Transportu Kolejowego (UTK)
- USA: Safety under the spotlight
- Verband Region Stuttgart (VRS)
- Verkehrsgesellschaft Mecklenburg-Vorpommern mbH (VMV)
- Verkehrsverbund Berlin-Brandenburg GmbH (VBB)
- Verkehrsverbund Bremen/Niedersachsen GmbH (VBN)
- Verkehrsverbund Mittelsachsen GmbH (VMS)
- Verkehrsverbund Oberelbe GmbH (VVO)
- Verkehrsverbund Ost-Region GmbH (VOR)
- Verkehrsverbund Rhein-Neckar GmbH (VRN)
- Verkehrsverbund Rhein-Ruhr AöR (VRR AöR)
- Verkehrsverbund Vogtland GmbH (VVV)
- Virginia Department of Rail & Public Transportation
- Vlaamse Overheid
- Welsh Government
- West Midlands Combined Authority (WMCA)
- West Virginia State Rail Authority
- West Yorkshire Combined Authority
- Wirtschaftsministerium Mecklenburg-Vorpommern
- Wuhan Railway Administration
- Xi’an Railway Administration
- Zarzad Transportu Miejskiego (ZTM)
- Zürcher Verkehrsverbund (ZVV)
- Zweckverband für den Nahverkehrsraum Leipzig (ZVNL)
- Zweckverband Mobilität Münsterland (ZVM)
- Zweckverband Mobilität Ruhr-Lippe (ZRL)
- Zweckverband Nahverkehrsverbund Paderborn/Höxter (NPH)
- Zweckverband Öffentlicher Personennahverkehr Rheinland-Pfalz Süd (ZÖPNV Süd)
- Zweckverband Schienenpersonennahverkehr Rheinland-Pfalz Nord (SPNV-Nord)
- Zweckverband Verkehrsverbund Bremen/Niedersachsen (ZVBN)
- Zweckverband Verkehrsverbund Oberlausitz-Niederschlesien GmbH (ZVON)
- Zweckverband Verkehrsverbund Ostwestfalen-Lippe (VVOWL)