1. Faculty of Mechanical Engineering, Lublin University of Technology, Nadbystrzycka 36, 20-618 Lublin, Poland
2. Faculty of Operation and Economics of Transport and Communications, University of Zilina, Univerzitná 8215/1, 010 26 Žilina, Slovakia
3. Faculty of Automotive and Construction Machinery Engineering, Warsaw University of Technology, Narbutta 84, 02-524 Warsaw, Poland
4. PKP Cargo S.A., Grójecka 17, 02-021 Warsaw, Poland
5. Faculty of Transport Engineering, Vilnius Gediminas Technical University, J. Basanavičiaus 28, LT-03224 Vilnius, Lithuania
6. Faculty of Power and Aeronautical Engineering, Warsaw University of Technology, Nowowiejska 24, 00-665 Warsaw, Poland