International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

Zagrebačka Road is the most heavily loaded corridor in Sesvete, the easternmost district of Zagreb, Croatia, and the city’s planning documents foresee the extended Branimirova Street as a second longitudinal to relieve it. This paper evaluates the conceptual design of that arterial with a calibrated macroscopic model. Morning-peak origin–destination demand was obtained from unmanned-aerial-vehicle traffic counts at five key intersections and assigned in a PTV Visum subnetwork calibrated against the counts (R² = 0.91). Two design variants were tested under identical demand: one following the General Urban Plan and one with two additional junctions. Both reduce the daily volume on Zagrebačka Road by about 22–23% and attract 12000–15000 vehicles per day to the new corridor, while the second adds only local benefit. Fuel use and CO₂ fall correspondingly on the relieved corridor.