07.02.19. Preparation of Main Designs for Heavy Maintenance (Road Rehabilitation-Upgrading) of the State Roads IB 15 and IB 21: Lot 1: IB 15, Sombor (Industrial zone) - Kula, L=39.445 km and Lot 2: IB 21, Ivanjica - Sjenica, L=38.300 km, Contract ID No. R