Suburban Rail Loop

The Suburban Rail Loop (SRL) is a rapid transit system currently under construction in Melbourne, the capital of Victoria and second largest city of Australia. The system is divided into three distinct sections : SRL East, SRL North and SRL West, connected by Melbourne Airport Rail between the North and West sections. The two main sections, SRL East and SRL North, are designed to form a single 60 km (37 mi) fully automated underground orbital metro line through the city's densely populated middl