Transurban Group is engaged in the business of development, operation and maintenance of toll roads. The Company has three geographic segments: Victoria, Australia; New South Wales, Australia and the United States of America (USA). The tolling businesses of Roam and Tollaust have also been included in the New South Wales operating segment. Transurban group is an internally managed toll toad investor with concessions to operate six mature Australian roads and three immature U.S roads. Foundation asset citylink in Melbourne is the group’s most valuable asset, contributing around half of the proportional revenues. It also owns full and partial interests in key motorways in Sydney’s orbital network, namely the M1 eastern distributor, the M5 south West motorway, the Westlink M7, the hills M2 and the Lane Cove Tunnel.