Institute of Transportation CIP Ltd concluded two contracts with Serbian Railways Infrastructure JSC for the development of planning documents for the construction of Makiš station and the railway line from the Kneževac tunnel to the future Makis station of the BG:Voz system, and the Contract for the development of planning documents for the construction of Karaburma station and the railway line from the Vračar tunnel tubes to the future Karaburma station of the BG:Voz system.