This is Transurban's second sustainability report. It covers our community, employee, environmental and customer activities from 1 July 2006 to 30 June 2007, unless otherwise stated.

Our first report covered our activities for the financial year ending 30 June 2006. We intend to continue to report annually on our sustainability progress.

Most of the data and information in this report comes from our Australian roads as they make up 96 per cent of assets worldwide. We cover Transurban corporate offices in Australia and its 100 per cent owned toll roads including CityLink in Melbourne and Hills M2 in Sydney.

We have included limited information on Pocahontas 895 in Virginia in the US, which we acquired the right to operate and manage in Virginia in June 2006. We expect to be able to report more next year.

While we are the customer service and tolling operator for Westlink M7, we only own 47.5 per cent of the road. This year Westlink Motorway Limited has provided information on key aspects of their business, which was not covered by the Sustainability Report's assurer, Net Balance Management Group. We will continue to work with Westlink to provide more information, and we will aim to include it in our assurance process in the future.

We have significantly increased our Sydney assets through the acquisition of Sydney Roads Group (SRG) in June 2007. SRG had interests in three Sydney motorways. We will report further on these roads in future reports.

Some of the reported data is collected by our major road operations contractors—TransLink Operations Pty Ltd (TLO) for CityLink and Bilfinger Berger Services (BBS) for Hills M2. We believe that the work they carry out for our assets forms part of our social and environmental footprint.

Target audiences

Our key target audiences for the Sustainability Report are internal and external stakeholders. They include employees, customers, community, investors, analysts, governments, non-government organisations and opinion leaders.