Appendix 22 Traffic Impact Assessment Study
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Appendix 22 Traffic impact assessment study J:\Jobs\42906733\6 Deliverables\Traffic\Version 4\Traffic Impact Assessment - Version 4 9 March 2010.doc Ichthys Gas Field Development Project Traffic Impact Assessment Study REPORT Ichthys Gas Field Development Project Traffic Impact Assessment Study Prepared for INPEX Browse, Ltd. Level 22, 100 St George's Terrace Perth Western Australia 6000 March 2010 INPEX Document No. C036-AH-REP-0033 INPEX REVISION: 4 ICHTHYS GAS FIELD DEVELOPMENT PROJECT TRAFFIC IMPACT ASSESSMENT STUDY Project Manager: URS Australia Pty Ltd …………………………… Level 6, 1 Southbank Boulevard Alexandra Ellis Southbank VIC 3006 Traffic Engineer Australia T: 61 3 8699 7500 Project Director: F: 61 3 8699 7550 …………………………… Alex Iljin Principal - Transport Date: March 2010 Reference: 42906733 Status: Final – Version 4 © Document copyright of URS Australia Pty Limited. This proposal is submitted on the basis that it remains commercial-in-confidence. The contents of this proposal are and remain the intellectual property of URS and are not to be provided or disclosed to third parties without the prior written consent of URS. No use of the contents, concepts, designs, drawings, specifications, plans etc. included in this proposal is permitted unless and until they are the subject of a written contract between URS Australia and the addressee of this proposal. URS Australia accepts no liability of any kind for any unauthorised use of the contents of this proposal and URS reserves the right to seek compensation for any such unauthorised use. Revision Date Description Prepared Checked Approved 1 28/8/09 Final Version 1 AE AI AI 2 14/10/09 Final Version 2 AE/PC AI AI 3 24/11/09 Final Version 3 AE AI AI 4 9/3/10 Final Version 4 PC AI AI This report may be cited as: “URS Australia Pty Ltd. 2009. Ichthys Gas Field Development Project: traffic impact assessment study. Report prepared for INPEX Browse, Ltd., Perth, Western Australia.” Prepared for INPEX Browse, Ltd., March 2010 ICHTHYS GAS FIELD DEVELOPMENT PROJECT TRAFFIC IMPACT ASSESSMENT STUDY Table of Contents Table of Contents ES Executive Summary ................................................................................... ES-1 1 Introduction ...................................................................................................... 1 1.1 Background ..................................................................................................................... 1 1.2 Project Objectives and Scope ....................................................................................... 2 1.2.1 Objectives ......................................................................................................... 2 1.2.2 Scope................................................................................................................ 3 2 Base Case Proposal......................................................................................... 4 2.1 Proposed Construction Schedule ................................................................................. 4 2.2 Location of Facilities and Access ................................................................................. 4 2.3 Construction Activity...................................................................................................... 5 2.4 Workforce ........................................................................................................................ 5 2.5 Relevant Sections of the Road Network....................................................................... 5 3 Existing Conditions.......................................................................................... 7 3.1 Existing Road Network................................................................................................... 7 3.2 Public Transport............................................................................................................ 10 3.3 Proposed Roadworks ................................................................................................... 11 3.4 Existing Road Accident Data (2003 to 2008) .............................................................. 13 3.4.1 Intersections ................................................................................................... 13 3.4.2 Midblocks........................................................................................................ 17 4 Traffic Volume ................................................................................................ 23 4.1 Existing Traffic Volumes and Data.............................................................................. 23 4.2 Traffic Generation for Proposed Development.......................................................... 28 4.2.1 Construction Traffic......................................................................................... 28 4.2.2 Operation ........................................................................................................ 30 4.3 Traffic Distribution........................................................................................................ 30 4.4 Future Traffic Volumes................................................................................................. 31 4.4.1 Background Volume ....................................................................................... 31 4.4.2 Generated Traffic............................................................................................ 37 4.4.3 Total Volume................................................................................................... 40 5 Road Network Performance .......................................................................... 43 5.1 Analysis Method............................................................................................................ 43 Prepared for INPEX Browse, Ltd., March 2010 i ICHTHYS GAS FIELD DEVELOPMENT PROJECT TRAFFIC IMPACT ASSESSMENT STUDY Table of Contents 5.2 Assumptions for SIDRA Modelling.............................................................................. 44 5.3 Existing Performance ................................................................................................... 45 5.3.1 Existing AM Peak Performance...................................................................... 46 5.3.2 Existing PM Peak Performance...................................................................... 48 5.4 Analysis with Construction Traffic Included.............................................................. 49 5.4.1 Comparison of Background Traffic Growth with Generated Construction Phase Related Vehicles.................................................................................. 49 5.4.2 Accommodation Facilities Location ................................................................ 52 5.5 Future Performance (Without Operations Traffic)..................................................... 56 5.6 Operation Phase............................................................................................................ 58 5.7 Road Safety.................................................................................................................... 58 5.8 Findings from Analysis ................................................................................................ 58 6 Site Requirements .......................................................................................... 64 6.1 Site Access .................................................................................................................... 64 6.2 Internal Circulation........................................................................................................ 64 6.3 On-Site Parking ............................................................................................................. 64 7 Other Items...................................................................................................... 66 7.1 Stakeholder Consultation............................................................................................. 66 7.2 Over-Dimension Vehicles............................................................................................. 66 7.3 Public Transport............................................................................................................ 67 8 Conclusion...................................................................................................... 68 9 Limitations ...................................................................................................... 70 Prepared for INPEX Browse, Ltd., March 2010 ii ICHTHYS GAS FIELD DEVELOPMENT PROJECT TRAFFIC IMPACT ASSESSMENT STUDY Tables, Figures, Appendices Tables, Figures, Appendices Tables Table 3-1 Accident Type at Intersections (2003 to 2008) ...........................................................................14 Table 3-2 Accident Time at Intersections (2003 to 2008) ...........................................................................16 Table 3-3 Road Accident Data at Midblocks (2003 to 2008) ......................................................................19 Table 4-1 Summary of Traffic Volumes – Construction ..............................................................................29 Table 4-2 Traffic Growth Rates ...................................................................................................................32 Table 5-1 AM and PM peak hours for each intersection.............................................................................45