As planning progressed, the dimensioned speed increased from 130 km/h (81 mph) via 160 km/h (99 mph) to 200 km/h (120 mph).
주요 지류는 반변천(101km)·내성천(102km)·금호강(116km)·황강(111km)·남강(186km)·밀양강(90km)·위천(111km)·감천(69km) 등이다.