Defence Logistics Transformation Project (DLTP): JLU(N)
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Robertson Barracks Traffic Study Trapp Architects and Department of Defence 23 January 2012 D R A F T Defence Logistics Transformation Project (DLTP): JLU(N) Robertson Barracks Traffic Study AECOM Robertson Barracks Traffic Study Defence Logistics Transformation Project (DLTP): JLU(N) D R A F T Defence Logistics Transformation Project (DLTP): JLU(N) Robertson Barracks Traffic Study Prepared for Trapp Architects and Department of Defence Prepared by AECOM Australia Pty Ltd Level 21, 420 George Street, Sydney NSW 2000, PO Box Q410, QVB Post Office NSW 1230, Australia T +61 2 8934 0000 F +61 2 8934 0001 www.aecom.com ABN 20 093 846 925 23 January 2012 60238192 AECOM in Australia and New Zealand is certified to the latest version of ISO9001 and ISO14001. © AECOM Australia Pty Ltd (AECOM). All rights reserved. AECOM has prepared this document for the sole use of the Client and for a specific purpose, each as expressly stated in the document. 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C:\DLTP-4\Traffic\Robertson Barracks - Transport Study_25012012 MJ.docx Revision 0 - 23 January 2012 AECOM Robertson Barracks Traffic Study Defence Logistics Transformation Project (DLTP): JLU(N) D R A F T Quality Information Document Defence Logistics Transformation Project (DLTP): JLU(N) Ref 60238192 Date 23 January 2012 Prepared by Anukorn Chounlamountry Reviewed by Isla Robertson Revision History Authorised Revision Revision Date Details Name/Position Signature 0 23 Jan 2012 Draft Report Matthew Jesson Associate Director AECOM Robertson Barracks Traffic Study Defence Logistics Transformation Project (DLTP): JLU(N) D R A F T Table of Contents 1.0 Introduction 1 1.1 Background 1 1.2 Purpose and scope of work 1 1.3 Report Structure 1 2.0 Existing conditions 2 2.1 Study area 2 2.2 Existing road network 3 2.3 Existing traffic volumes 3 2.3.1 Intersection counts 3 2.3.2 Intersection performance 7 2.3.3 Mid block traffic flow 8 2.4 Existing barracks operation 10 2.4.1 Barrack gate counts 10 2.4.2 Barrack generated traffic 11 3.0 Traffic Impact of Proposed Access Road 16 3.1 Proposal 16 3.2 Traffic redistribution 16 3.3 Intersection performance 18 3.4 New Barracks Access Intersection 18 3.5 Barrier Access Requirement 23 4.0 Summary and conclusion 24 4.1 Summary 24 4.2 Conclusion 24 Appendix A Council Traffic Data A Appendix B Robertson Barracks Access Gate Counts B C:\DLTP-4\Traffic\Robertson Barracks - Transport Study_25012012 MJ.docx Revision 0 - 23 January 2012 AECOM Robertson Barracks Traffic Study 1 Defence Logistics Transformation Project (DLTP): JLU(N) D R A F T 1.0 Introduction 1.1 Background The Joint Logistics Unit (North) (JLU (N)) project purpose is to consolidate and provide material support to the Australian Defence Force (ADF) operations in Northern Australia - being all of the Northern Territory and northern Western Australia. The JLU (N) project is part of the wider Defence Logistics Transformation Project (DLTP). The support provided by JLU (N) covers warehousing and distribution, depot level repair and maintenance support services to regional and locally based dependent units. It also provides support to regionally based exercises and to overseas deployments. JLU (N) conducts operations at facilities at five sites in the Darwin area, being RAAF Base Darwin, three leased sites at Winnellie and an interim service station at Robertson Barracks. These sites are located relatively close to each other and are easily accessed. The DLTP proposes that JLU (N) will consolidate to a new Greenfield site at Robertson Barracks to reduce its facilities footprint at RAAF Base Darwin and vacate its three leased sites at Winnellie. This includes the relocation of: - JLU (N) Headquarters from RAAF Base Darwin to Robertson Barracks; - Explosive Ordnance section and contingency vehicle parking sites from RAAF Base Darwin to Robertson Barracks; and - Warehousing and vehicle maintenance sites from Winnellie to Robertson Barracks. JLU (N) will retain the existing special operations facilities at RAAF Base Darwin to provide cargo consolidation in support of operations, humanitarian and disaster relief programs. AECOM has been commissioned by Trapp Architects to prepare a traffic study in relation to vehicular access for Robertson Barracks, Northern Territory (the Barracks) as part of the JLU (N) project. Robertson Barracks is a major Australian Army base located in the outer Darwin, Northern Territory suburb of Holtze in the Municipality of Litchfield. Holtze is situated approximately 14 kilometres east of Darwin CBD, north of Pinelands, approximately four kilometres north east of Palmerston City. A new dedicated access road acting as an alternative access to service Robertson Barracks is proposed to be constructed from McMillans Road, entering the site to the south of the JLU (N) precinct. 1.2 Purpose and scope of work The purpose of the traffic study is to determine the performance of the existing road network surrounding Robertson Barracks and to investigate the impact to the local road network of providing an additional access road to Robertson Barracks. 1.3 Report Structure The report has been structured into the following sections: - Section 2 describes the existing land use and transport context surrounding the Barracks; - Section 3 describes the proposal, the additional access arrangements to the Barracks and the impact on the local road network; and - Section 4 provides a summary and conclusion for the report. C:\DLTP-4\Traffic\Robertson Barracks - Transport Study_25012012 MJ.docx Revision 0 - 23 January 2012 AECOM Robertson Barracks Traffic Study 2 Defence Logistics Transformation Project (DLTP): JLU(N) D R A F T 2.0 Existing conditions 2.1 Study area Robertson Barracks is a major Australian Army base located in the outer Darwin, Northern Territory suburb of Holtze in the Municipality of Litchfield. Holtze is situated approximately 14 kilometres east of Darwin CBD, north of Pinelands, approximately four kilometres north east of Palmerston City. The Barracks is bound by Campbell Road to the north, Thorngate Road to the east, McMillans Road to the west and the Stuart Highway to the south. The Barracks was built in 1990 and is home to the 1st Brigade and 1st Aviation Regiment. The study area is shown in Figure 2.1. Figure 2.1 Robertson Barracks study area Source: Google 2012 AECOM Robertson Barracks Traffic Study 3 Defence Logistics Transformation Project (DLTP): JLU(N) D R A F T 2.2 Existing road network The major and local roads surrounding and providing access to Robertson Barracks include the Stuart Highway, McMillans Road, Farrar Road, Brandt Road, Stevens Road, Campbell Road and Thorngate Road. Brief descriptions of the roads are provided below. Stuart Highway is a four lane two-way carriageway running east west, located south of Robertson Barracks. It is a major highway connecting Darwin in the north to South Australia in the south. It has a posted speed limit of 100 km/hr in the vicinity of the Barracks. McMillans Road is a four lane two-way carriageway running west to south east, reducing to one lane in each direction in the vicinity of the Barracks. McMillans Road has a posted speed limit of 80km/hr. Brandt Road is a two lane two-way local road providing access to a residential area and is a link between McMillans Road and Campbell Road via Farrar Road. Brandt Road has a posted speed limit of 60km/hr. Farrar Road is also a two lane two-way local road providing residential access and connecting McMillans Road to Brandt Road. Stevens Road on the western side of the Barracks is a two lane two way road that connects Campbell Road in the north to McMillans Road in the south. Campbell Road is a two lane two-way road that intersects with the northern access to Robertson Barracks (Light Horse Drive). Campbell Road has a posted speed limit of 60km/hr. Thorngate Road is a two lane two-way road that intersects with the two eastern accesses to Robertson Barracks (Robertson Road and Courage Avenue). Thorngate Road has a posted speed limit of 80km/hr. 2.3 Existing traffic volumes 2.3.1 Intersection counts Intersection turning counts were collected at six key intersections on the local road network surrounding Robertson Barracks to determine the existing traffic conditions. AECOM commissioned Austraffic Pty Ltd to undertake the intersection turning counts over a three hour period in the morning and afternoon peak periods during a typical weekday. The times surveyed are as follows: - AM Peak - 06:00am to 09:00am; and - PM Peak - 15:30pm to18:30pm. The location of the surveyed intersections are listed below and shown in Figure 2.2. The surveys were conducted on the 8th December 2011. - Location 1: Intersection of McMillans Road / Farrar Road; - Location 2: Intersection of Farrar Road / Brandt Road; - Location 3: Intersection of Brandt Road / Stevens Road / Campbell Road; - Location 4: Intersection of Stevens Road / McMillans Road; - Location 5: Intersection of Stuart Highway / Tulagi Road; and - Location 6: Intersection of Stuart Highway / McMillans Road. C:\DLTP-4\Traffic\Robertson Barracks - Transport Study_25012012 MJ.docx Revision 0 - 23 January 2012 AECOM Robertson Barracks Traffic Study 4 Defence Logistics Transformation Project (DLTP): JLU(N) D R A F T Figure 2.2 Intersection turning counts outside Robertson Barracks Source: Google, 2012 An excel spreadsheet has been developed showing the AM and PM peak hour network flows of the surveyed intersections as shown in Figure 2.3 and Figure 2.4.