• Aurizon
• Rio Tinto

Brazil

• Vale

Canada

• Iron Moustache Consulting
• Railway Association of Canada

China

• China Academy of Railway Sciences
• China Railway

France

• International Union of Railways

India

• Indian Railways
• Ministry of Railways

Norway

• Nordic Heavy Haul Association

Russia

• Russian Railway Research Institute

South Africa

• Transnet Freight Rail

Sweden

• Nordic Heavy Haul Association

United States

• Transportation Technology Center