Road Safety Assessment Report Proposed Large Format Digital Sign – 626 Stirling Highway
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Road Safety Assessment Report Proposed Large Format Digital Sign – 626 Stirling Highway Road Safety Assessment Report Proposed Large Format Digital Sign – 626 Stirling Highway CW1091500 Prepared for Spyglass Media Pty Ltd 27 January 2021 27 January 2021 Cardno i Road Safety Assessment Report Proposed Large Format Digital Sign – 626 Stirling Highway Contact Information Document Information Cardno (WA) Pty Ltd Prepared for Spyglass Media Pty Ltd ABN 77 009 119 000 Project Name Proposed Large Format Digital Sign – 626 Stirling 11 Harvest Terrace West Perth WA 6005 Highway Australia File Reference CW1095100-TR-RP-001-B- LFDS 626 Stirling Hwy.docx www.cardno.com Phone +61 8 9273 3888 Job Reference CW1091500 Fax +61 8 9486 8664 Date 27 January 2021 Version Number B Author(s): Raymond Rachmat Effective Date 27/01/2021 Road Safety Auditor Approved By: Sam Laybutt Date Approved 27/01/2021 Senior Road Safety Auditor Document History Version Effective Date Description of Revision Prepared by Reviewed by A 22 Dec 2020 For Issue RR SGL B 27 Jan 2021 Updated Plan RR SGL © Cardno. Copyright in the whole and every part of this document belongs to Cardno and may not be used, sold, transferred, copied or reproduced in whole or in part in any manner or form or in or on any media to any person other than by agreement with Cardno. This document is produced by Cardno solely for the benefit and use by the client in accordance with the terms of the engagement. Cardno does not and shall not assume any responsibility or liability whatsoever to any third party arising out of any use or reliance by any third party on the content of this document. Our report is based on information made available by the client. The validity and comprehensiveness of supplied information has not been independently verified and, for the purposes of this report, it is assumed that the information provided to Cardno is both complete and accurate. Whilst, to the best of our knowledge, the information contained in this report is accurate at the date of issue, changes may occur to the site conditions, the site context or the applicable planning framework. This report should not be used after any such changes without consulting the provider of the report or a suitably qualified person. CW1091500 | 27 January 2021 | Commercial in Confidence ii Road Safety Assessment Report Proposed Large Format Digital Sign – 626 Stirling Highway Table of Contents 1 Introduction 1 2 LFDS Location and Characteristics 2 2.1 LFDS Location 2 2.2 LFDS Characteristics 2 3 Road Environment and Traffic Volumes 4 4 LFDS Visibility and Driver Sight Lines 5 5 Device Restriction Area 8 5.1 Criteria 8 5.2 Cross Road DRA 9 5.3 Mitigation Measure 10 6 Crash History 11 6.1 Killed and Serious Injury (KSI) Criteria 11 6.2 Crash Rate Criteria 11 7 Assessment Against Main Roads Policy 14 8 Conclusion and Recommendation 16 Appendices Appendix A LFDS Plan Appendix B Device Restriction Area Appendix C Crash Data Appendix D Traffic Data Appendix E Detailed Crash Calculation CW1091500 | 27 January 2021 | Commercial in Confidence iii Road Safety Assessment Report Proposed Large Format Digital Sign – 626 Stirling Highway Tables Table 3-1 Average Mid-Block Traffic Volume 4 Table 6-1 Stirling Highway Northbound Casualty Crash Rate 11 Figures Figure 2-1 LFDS Location 2 Figure 2-2 Proposed LFDS – View from Stirling Highway Northbound 3 Figure 2-3 LFDS Dimension 3 Figure 4-1 Stirling Highway View Northbound – Left Lane 6 Figure 4-2 Stirling Highway View Northbound – Right Lane 7 Figure 5-1 Relevant DRA for the Proposed LFDS 8 Figure 5-2 Proposed LFDS Location Relative to the Cross – Road DRA 10 Figure 6-1 Comparison of Critical Crash Rate and Stirling Highway Casualty Crash Rate 12 Figure 6-2 Crash clusters identified near the LFDS 13 CW1091500 | 27 January 2021 | Commercial in Confidence iv Road Safety Assessment Report Proposed Large Format Digital Sign – 626 Stirling Highway 1 Introduction Cardno has been engaged by Spyglass Media Pty Ltd (“the Client”) to prepare a Road Safety Assessment Report for the installation of a Large Format Digital Sign (LFDS) at 626 Stirling Highway, Mosman Park. The LFDS is proposed to be installed on the façade of an existing building, viewable from Stirling Highway northbound. The LFDS will replace an existing static advertising and business sign currently attached to the same façade. The LFDS is located outside, but visible from, a state-controlled road (Stirling Highway), and is therefore subject to Sections 3 and 5 of Main Roads’ Policy and Application Guidelines for Advertising Within and Beyond State Road Reserves (October 2020). Section 4 of the Policy does not apply to this proposal. The assessment has been undertaken by Raymond Rachmat (Road Safety Auditor) and Sam Laybutt (Senior Road Safety Auditor). CW1091500 | 27 January 2021 | Commercial in Confidence 1 Road Safety Assessment Report Proposed Large Format Digital Sign – 626 Stirling Highway 2 LFDS Location and Characteristics 2.1 LFDS Location The location of the proposed LFDS is shown in Figure 2-1. The LFDS will be installed on the façade of an existing commercial building located at 626 Stirling Highway and is visible from Stirling Highway northbound. Figure 2-1 LFDS Location Proposed LFDS 2.2 LFDS Characteristics The proposed LFDS has a screen dimension of 6m by 4m and approximately 2.1m to 2.7m above ground. Figure 2-2 below shows the artist’s impression of LFDS viewed from Stirling Highway. This complete site plan is included in Appendix A. The proposed LFDS is located within a commercial strip with other business and advertising signs already present, therefore the proposed LFDS would blend well with the existing roadside environment. CW1091500 | 27 January 2021 | Commercial in Confidence 2 Road Safety Assessment Report Proposed Large Format Digital Sign – 626 Stirling Highway Figure 2-2 Proposed LFDS – View from Stirling Highway Northbound Proposed LFDS Figure 2-3 LFDS Dimension CW1091500 | 27 January 2021 | Commercial in Confidence 3 Road Safety Assessment Report Proposed Large Format Digital Sign – 626 Stirling Highway 3 Road Environment and Traffic Volumes Roads in the vicinity of the proposed LFDS are: > Stirling Highway is classified as a Primary Distributor under the Main Roads WA Functional Road Hierarchy with a posted speed limit of 60 km/h. The road is a single carriageway road with 2 northbound lanes and 2 southbound lanes and a painted median. > Glyde Street is classified as a Local Distributor under the Main Roads WA Functional Road Hierarchy with a posted speed limit of 50 km/h. Table 3-1 Average Mid-Block Traffic Volume Weekday AM Weekday PM Location Date Daily Peak Peak Stirling Highway (H014) (northbound) 2019/2020 1,235 1,119 16,398 (North of Wellington Street SLK 10.78) Stirling Highway (H014) (southbound) 2019/2020 797 1,325 15,317 (North of Wellington Street SLK 10.78) CW1091500 | 27 January 2021 | Commercial in Confidence 4 Road Safety Assessment Report Proposed Large Format Digital Sign – 626 Stirling Highway 4 LFDS Visibility and Driver Sight Lines Figure 4-1 shows the LFDS from the point of view of driver on the left lane on Stirling Highway northbound. From the perspective of drivers travelling in the left lane, the LFDS would be partially visible from approximately 140m away with most of the LFDS obscured by vegetation. At 80m the LFDS can be fully visible, however it may be obscured by other vehicles in the adjacent lane. At the approach to Glyde Street intersection the LFDS may momentarily be in the background of the primary signals on the median, however the LFDS and the primary signals are located outside of the driver’s viewing corridor and at this point drivers would be focused the secondary and tertiary signals on the far side of the intersection. Figure 4-2 shows the LFDS from the point of view of driver on the right lane on Stirling Highway northbound. When travelling on the right lane, the LFDS is partially visible from 100m away and become fully visible at approximately 80m away. At the approach to Glyde Street intersection, the LFDS would be positioned under the signals and as such will not form the background of the signals. Although the LFDS will replace existing static advertising signage, in preliminary discussions Main Roads WA has expressed a concern that the there is a potential for the LFDS to distract drivers undertaking right turn into Glyde Street. Under the present filter turn signal phasing, drivers seeking to turn right must wait for an appropriate gap in the opposing traffic flow. A change in advertising message may increase the risk of a driver mis-judging a gap in the opposing traffic flow, increasing the risk of a crash occurring. In order to mitigate against this risk, certain modifications to the traffic signal operation are proposed in Section 5.3. CW1091500 | 27 January 2021 | Commercial in Confidence 5 Road Safety Assessment Report Proposed Large Format Digital Sign – 626 Stirling Highway Figure 4-1 Stirling Highway View Northbound – Left Lane CW1091500 | 27 January 2021 | Commercial in Confidence 6 Road Safety Assessment Report Proposed Large Format Digital Sign – 626 Stirling Highway Figure 4-2 Stirling Highway View Northbound – Right Lane CW1091500 | 27 January 2021 | Commercial in Confidence 7 Road Safety Assessment Report Proposed Large Format Digital Sign – 626 Stirling Highway 5 Device Restriction Area 5.1 Criteria A Device Restriction Area (DRA) is an area where advertising devices visible from state-controlled road are restricted under the Policy. One of the main reasons for establishing DRAs are to ensure that important information conveyed via traffic control devices (e.g.