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Traffic and Transport Assessment

Sherwood Heights Residential Subdivision – Racecourse Road, Sunbury CG140057

Prepared for Racecourse Road Holdings Pty Ltd

30 November 2015

Traffic and Transport Assessment

Sherwood Heights Residential Subdivision – Racecourse Road, Sunbury CG140057

Traffic and Transport Assessment Sherwood Heights Residential Subdivision – Racecourse Road, Sunbury

30 November 2015 Cardno ii

Document Information

Prepared for Racecourse Road Holdings Pty Ltd

Project Name Sherwood Heights Residential Subdivision – Racecourse Road, Sunbury

File Reference CG140057REP001F02.docx

Job Reference CG140057

Date 30 November 2015

Contact Information

Cardno Victoria Pty Ltd

Trading as Cardno

ABN 47 106 610 913

Level 4

501 Swanston Street

Melbourne

Victoria 3000 Australia

Telephone: (03) 8415 7777

Facsimile: (03) 8415 7788

International: +61 3 8415 7777

[email protected]

www.cardno.com

Document Control

Version Date Author Author Initials

Reviewer Reviewer Initials

F02 30/11/15 Luke Richardson

Hilary Marshall

© 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.


30 November 2015 Cardno iii

Table of Contents

1 Introduction 5

2 Existing Conditions and Background 6

2.1 Site Location and Land Use 6

2.2 Road Network 7

2.2.1 Racecourse Road 7

2.2.2 Elizabeth Drive 8

2.3 Base Case Peak Hour Traffic Volumes 9

2.4 Sustainable Transport 10

2.4.1 Public Transport 10

2.4.2 Bicycle Network 10

3 Lancefield Road Precinct Structure Plan 11

3.1 Overview and Status 11

3.2 Future Urban Structure Concept Plan 11

3.3 Road Layout 12

3.4 Sunbury Growth Areas Traffic Modelling 12

3.4.1 Overview 12

3.4.2 Interim (2031) Analysis 13

3.4.3 Ultimate (2046) Analysis 13

3.4.4 Summary of Modelling 14

4 Proposed Development 15

4.1 General 15

4.2 Access 15

4.3 Road Hierarchy 16

4.4 Road Cross Sections 18

4.5 Pedestrians and Cyclists 19

4.6 Public Transport 19

4.7 Traffic Management 19

5 Planning Scheme Assessment 20

5.1 Clause 56 20

6 Traffic Considerations 22

6.1 General 22

6.2 Traffic Generation 22

6.3 Daily Traffic Volumes 22

6.4 Peak Hour Traffic Volumes 24

6.4.1 Traffic Distribution 24

6.4.2 Traffic Volume Growth 24

6.4.3 Anticipated Peak Hour Volumes 24

6.4.4 Impact of Anticipated Peak Hour Traffic Generation 26

7 Conclusions 29

Appendices

Appendix A Approved Elizabeth Drive / Racecourse Road Intersection Functional Design

Appendix B Proposed Elizabeth Drive / Racecourse Road Intersection Functional Design


30 November 2015 Cardno iv

Tables

Table 4-1 Proposed Road Cross Sections 18

Table 6-1 Residential Subdivisions Traffic Distribution 24

Table 6-2 Rating of Degrees of Saturation 27

Table 6-3 Anticipated Future Peak Hour Operation – Elizabeth Drive / Racecourse Road 27

Table 6-4 Anticipated Future Peak Hour Operation – Proposed Secondary Site Access 28

Figures

Figure 2-1 Site Location 6

Figure 2-2 View of Racecourse Road in the Vicinity of the Site 7

Figure 2-3 Typical View of Elizabeth Drive to the North of Riddell Road 8

Figure 2-4 Base Case Peak Hour Traffic Volumes – Racecourse Road / Elizabeth Drive 9

Figure 2-5 Sunbury Public Transport Services 10

Figure 3-1 Lancefield Road PSP Future Urban Structure Concept (Draft Version 161214) 11

Figure 3-2 Extract of Lancefield Road PSP Future Urban Structure Concept (Draft Version 161214) 12

Figure 3-3 Interim (2031) Daily Traffic Volumes (Option 4) 13

Figure 4-1 Proposed Subdivision Layout 15

Figure 4-2 Road Hierarchy 17

Figure 4-3 Proposed Elizabeth Drive Cross Section 18

Figure 4-4 Proposed Traffic Management Treatments 19

Figure 6-1 Anticipated Daily Traffic Volumes 23

Figure 6-2 Anticipated Peak Hour Traffic Generation and Distribution of Proposed Development 25

Figure 6-3 Anticipated Future Peak Hour Traffic Volumes 26


30 November 2015 Cardno 5

1 Introduction

Cardno has been engaged by Racecourse Road Holdings Pty Ltd to undertake a Traffic and Transport

Assessment of the proposed residential subdivision on Racecourse Road in Sunbury known as Sherwood

Heights.

The following traffic assessment has been prepared to accompany the planning submission for the

residential subdivision which comprises 407 residential lots.

In the course of preparing this report, the subject site and its surrounds have been inspected, traffic volume

data has been collected and analysed, traffic generation characteristics have been determined, estimates of

expected traffic volumes on internal roads and access points have been assessed, pedestrian and bicycle

connectivity has been reviewed and proposed public transport facilities have been considered.



2 Existing Conditions and Background

2.1 Site Location and Land Use

The subject site is an irregular shaped parcel of land, with a frontage of approximately 1.2 kilometres to

Racecourse Road, a depth of up to approximately 600 metres and a total area of approximately 50 hectares.

The site is located on the east side of Racecourse Road, between Hopbush Avenue and the Emu Bottom

Wetlands, as shown in Figure 2-1.

The subject site is currently rural in nature, however a telecommunications tower is located on the site

adjacent to the future Elizabeth Drive / Racecourse Road intersection, with access via Racecourse Road.

The Sunbury Town Centre is located approximately 2 kilometres south of the site along Racecourse Road.

Land uses surrounding the subject site are primarily rural in nature to the north, east and west and

residential to the south.

It is understood that a residential subdivision known as Sunbury Fields comprising in the order of 390

residential lots is to be constructed to the west of the site at 275 Racecourse Road, Sunbury. Mr. Stephen

Hunt of Cardno prepared a Traffic Engineering Evidence Statement (Ref: CG130479REP001F01 Panel,

dated: 19 August 2013) for the panel hearing for the Master Plan of this site. Cardno also prepared the

Integrated Transport Plan and Traffic Assessment which accompanied the town planning application (Ref:

CG130479REP002F01, dated 13 December 2013). The Sunbury Fields development plan has been

approved with construction due to start in the near future.

The Sunbury Fields subdivision will include a Neighbourhood Activity Centre (NAC) with an area of

approximately 5,000 square metres, which is expected to include a full line supermarket and associated

specialty shops. The NAC will be located adjacent to the future Elizabeth Drive / Racecourse Road

intersection, adjacent to the subject site.

It is noted that the subject site is located within the Lancefield Road Precinct Structure Plan (PSP 1075)

area, which is currently being prepared by the Metropolitan Planning Authority (MPA).

Figure 2-1 Site Location

Subject Site



2.2 Road Network

2.2.1 Racecourse Road

Racecourse Road generally extends in a north – south direction from Valley View Crescent to Riddell Road.

In the vicinity of the site, Racecourse Road operates with a single traffic lane in each direction, as shown in

Figure 2-2.

Figure 2-2 View of Racecourse Road in the Vicinity of the Site



2.2.2 Elizabeth Drive

Elizabeth Drive extends generally in a southwest – northeast direction from Mitchells Lane to its terminus

approximately 1.4 kilometres northeast of Riddell Road.

North of Riddell Road, Elizabeth Drive operates with a single traffic lane, a shared bicycle lane and parking

lane in each direction, separated by a very wide median, as shown in Figure 2-3.

Figure 2-3 Typical View of Elizabeth Drive to the North of Riddell Road

As part of the future residential subdivision at 275 Racecourse Road, Elizabeth Drive will be extended to

intersect with Racecourse Road adjacent to the subject site. The intersection will be constructed as a

roundabout, with the approved design provided in Appendix A.



2.3 Base Case Peak Hour Traffic Volumes

The Traffic Engineering Evidence Statement prepared by Cardno provided an assessment of the anticipated

future peak hour traffic volumes at a number of intersections surrounding the future residential subdivision at

275 Racecourse Road. The anticipated future peak hour traffic volumes at the future Racecourse Road /

Elizabeth Drive intersection as reported in this statement are provided in Figure 2-4. For the purposes of this

assessment, these will be used as the base case peak hour traffic volumes.

It is noted that the Racecourse Road volumes were based on results surveyed in 2013, with a 2% growth

applied up to the year 2018.

Figure 2-4 Base Case Peak Hour Traffic Volumes – Racecourse Road / Elizabeth Drive

Eli

za

be

th D

riv

e (

We

st)

49 100

131 271

197 231

5 16

Racecourse Road (South)

Racecourse Road (North)

105 44 7

16 North

AM Peak PM Peak



2.4 Sustainable Transport

2.4.1 Public Transport

The site has no immediate proximity to existing public transport services. The nearest existing public

transport services are located generally in the Sunbury Town Centre approximately 2 kilometres south of the

site and include both bus and train services, as shown in Figure 2-5.

It is understood that bus route 489 (Sunbury Railway Station – Canterbury Hills) will be extended in the

future to travel along Elizabeth Drive through the future residential subdivision at 275 Racecourse Road and

then turn south onto Racecourse Road, with bus stops to be provided at the future Elizabeth Drive /

Racecourse Road intersection, adjacent to the subject site.

Figure 2-5 Sunbury Public Transport Services

2.4.2 Bicycle Network

There are no existing provisions for on road or off road bicycle paths in the immediate vicinity of the subject

site. The Elizabeth Drive extension will include on-road bicycle lanes, which once constructed, will provide

access through to Riddell Road and beyond.



3 Lancefield Road Precinct Structure Plan

3.1 Overview and Status

The Metropolitan Planning Authority (MPA) in conjunction with Hume City Council is currently in the process

of preparing a Precinct Structure Plan (PSP) for the area known as Lancefield Road, which includes the

subject site. The MPA are preparing the Lancefield Road PSP (PSP 1075) in conjunction with the Sunbury

South PSP.

Several draft versions of the Urban Structure Plan have been released to stakeholders for review and

comment. The PSP is expected to go on exhibition in August.

3.2 Future Urban Structure Concept Plan

The latest draft plan of the Future Urban Structure Concept plan of the Lancefield Road PSP area has been

issued for discussion purposes and is shown in Figure 3-1. The subject site is located towards the northwest

corner of the PSP area and is designated as residential.

Figure 3-1 Lancefield Road PSP Future Urban Structure Concept (Draft Version 161214)

Subject Site



3.3 Road Layout

The road network plan has not yet been released however the structure plan as shown in Figure 3-2 gives

an indication of the proposed road network. As shown, it is proposed for Elizabeth Drive to extend through

the site as a secondary road.

The structure plan indicates a potential bridge crossing across Jacksons Creek as well as a future train

station to the northeast of the site.

Figure 3-2 Extract of Lancefield Road PSP Future Urban Structure Concept (Draft Version 161214)

3.4 Sunbury Growth Areas Traffic Modelling

3.4.1 Overview

Traffic modelling for the greater Sunbury area has been undertaken by GTA consultants in conjunction with

the preparation of the PSP documentation. The modelling includes both the Lancefield Road and the

Sunbury South PSP areas and is titled ‘Strategic Transport Modelling of the Sunbury & Diggers Res Growth

Corridor (Sunbury South PSP 1074 & Lancefield Road PSP 1075) dated 5th October 2015. The traffic

modelling has been undertaken to determine the infrastructure needs including two potential crossings of

Jacksons Creek associated with the development of the two PSP areas.

The modelling was primarily undertaken for ‘Ultimate’ (2046) conditions, with 9 different options analysed

under these development conditions, ie full development of both the Sunbury South and Lancefield Road

PSP areas.

One scenario was also modelled under ‘Interim’ (2031) conditions, which sought to test the road network

operating conditions without a new Jacksons Creek crossing within either PSP area.

Subject Site



3.4.2 Interim (2031) Analysis

The anticipated daily traffic volumes in the vicinity of the site for the Interim analysis are shown in Figure 3-3.

Figure 3-3 Interim (2031) Daily Traffic Volumes (Option 4)

As shown in the preceding figure, Racecourse Road south of Elizabeth Drive is anticipated to carry in the

order of 2,100 vehicles per day increasing to 4,900 north of Riddell Road in the interim design period if the

Jackson’s Creek crossing is not constructed.

3.4.3 Ultimate (2046) Analysis

As previously mentioned a number of scenarios were modelled for ultimate conditions. Option 1, 3, 5, 6 and

8 include a creek crossing in the vicinity of the site that would join Elizabeth Drive northeast of the subject

site. A summary of daily traffic volumes on key roads throughout the Sunbury area is contained within the

GTA study as Table 8.5 and reproduced as follows:

Elizabeth Drive



Link number 3 refers to the Elizabeth Drive extension over Jacksons Creek. As shown in the preceding

table, depending on which scenario is selected, Elizabeth Drive is expected to carry in the order of 14,300 to

18,700 vehicles per day.

3.4.4 Summary of Modelling

In regards to the Jacksons Creek crossings, the GTA study states that:

“The two bridges are anticipated to carry up to 15,000 vehicles per day and would likely fit the operation

category of a lower order arterial or connector road. They provide more flexibility in the network and reduce

volumes in the town centre. Notwithstanding, the results demonstrate from a transport perspective that the

two PSPs are able to function regardless of the introduction of the river crossings.”



4 Proposed Development

4.1 General

It is proposed to develop the site for the purposes of a residential subdivision, with a total of 407 lots. The

proposed subdivision layout is provided in Figure 4-1.

Figure 4-1 Proposed Subdivision Layout

It should be noted that the final alignment of Elizabeth Drive may be altered at its eastern extent pending

detailed design of a future Jacksons Creek crossing.

4.2 Access

The main access to the subject site will be via the proposed Elizabeth Drive / Racecourse Road roundabout.

The roundabout will be constructed by the Fraser subdivision located at 275 Racecourse Road as a 3 leg

roundabout providing access to their site on the western side of Racecourse Road. Cardno are advised that

the construction of the 3 leg roundabout should be complete by mid-2016, ie before any lots are occupied on

the subject site. The construction of the roundabout will involve a considerable upgrade and modification to

Racecourse Road adjacent to the subject site.



The roundabout has been designed to accommodate a fourth eastern leg extending Elizabeth Drive into the

subject site. The fourth leg of the roundabout will be constructed by Racecourse Road Holdings Pty Ltd as

part of the development of the subject site. The proposed roundabout functional design is attached in

Appendix B. The lot boundaries have been setback to allow for the potential future duplication of Elizabeth

Drive and the Elizabeth Drive / Racecourse Road roundabout.

A secondary fully directional site access to Racecourse Road is proposed towards the northern end of the

site, between Emu Road and Albert Road.

The southern portion of the site which is proposed to comprise 36 lots will be separated internally from the

balance of the site by a reserve and is proposed to be provided access via the existing Hopbush Avenue.

Access to the telecommunications tower will be retained to Racecourse Road and / or provided via Elizabeth

Drive as appropriate.

4.3 Road Hierarchy

The proposed road network includes the extension of Elizabeth Drive through the subject site as a connector

road, with the balance of the site comprising a series of local access streets.

The proposed road hierarchy plan is detailed in Figure 4-2.



Figure 4-2 Road Hierarchy

Connector Road – Elizabeth Drive Local Access Street – Typical Local Access Street – Connection to Racecourse Road Local Access Street – Adjacent to Open Space



4.4 Road Cross Sections

As discussed in Section 4.3, the road hierarchy is proposed to consist of the Elizabeth Drive extension

through the site as a connector road and a local access street for the secondary access to the north of

Elizabeth Drive, with the balance of the site comprising a series of local access streets.

The road cross sections are generally in accordance or in excess of the requirements of Table C1 of Clause

56.06-8 of the Hume Planning Scheme and have been designed to give the proposed estate both a high

performing road network and a unique character that promotes a pedestrian and bicycle friendly network.

The proposed Elizabeth Drive cross section is in accordance with the future cross section of Elizabeth Drive

through the future residential subdivision at 275 Racecourse Road and is shown in Figure 4-3.

The proposed cross sections are summarised in Table 4-1.

Table 4-1 Proposed Road Cross Sections

Type Road Reserve

Carriageway Bicycles Parking Indicative Daily Capacity (vehicles / day)

Pedestrians

Connector Road – Elizabeth Drive

33 m 1 x 3.5 m traffic lane in each direction and 11 m median

1 x 1.7 m bicycle lane in each direction and 1 x 2.5 m shared path

N/A > 7,000 1 x 1.5 m footpath and 1 x 2.5 m shared path

Local Access Street – Typical

16 m 7.3 m - On Road < 3,000 2 x 1.5 m footpaths

Local Access Street – Connection to Racecourse Road

22 m 1 x 3.5 m traffic lane in each direction and 3.0 m median

- On Road < 3,000 2 x 1.5 m footpaths

Local Access Street – Adjacent to Open Space

13.5 m 7.3 m - On Road < 3,000 1 x 1.5 m footpath

Figure 4-3 Proposed Elizabeth Drive Cross Section



4.5 Pedestrians and Cyclists

The proposed residential estate will provide good connectivity and access for both pedestrians and cyclists.

As shown in Table 4-1, Elizabeth Drive is proposed to have on road bicycle lanes and a shared path,

connecting to the future on road bicycle lanes and shared path on Elizabeth Drive through the future

residential subdivision at 275 Racecourse Road. Cyclists will be able to access Elizabeth Drive by filtering

through the local street network.

For pedestrians, footpaths proposed along both sides of all streets that have residential frontages on both

sides.

4.6 Public Transport

It is not proposed for bus routes to travel through the subject site, with the future extension of bus route 489

through the future residential subdivision at 275 Racecourse Road servicing the proposal. The nearest bus

stop will be located at the future Elizabeth Drive / Racecourse Road intersection, adjacent to the subject site.

A bus stop at the Elizabeth Drive / Racecourse Road intersection would ensure approximately 50% of lots

were within a 400 metre radius of public transport, with the remaining lots within an approximate 600 metre

radius of the site.

4.7 Traffic Management

The proposed development has been designed to minimise the need to provide traffic management

treatments. With the exception of Elizabeth Drive, road section lengths have been limited or bends have

been introduced to minimise the potential for higher vehicle speeds within the local road network.

Roundabouts are proposed at all 4 way intersections to ensure appropriate traffic control and vehicular

speeds throughout the estate, as shown in Figure 4-4.

Figure 4-4 Proposed Traffic Management Treatments

Where required, temporary end treatments will be installed at road discontinuations between development

stages. These end treatments will consist of a gravelled turn around area large enough to facilitate a service

vehicle with road closure signage installed at the far end of the end treatment.

Proposed Roundabout



5 Planning Scheme Assessment

5.1 Clause 56

Clause 56 of the Hume Planning Scheme relates to ‘Residential Subdivision’ and specifies ‘Objectives’ and

‘Standards’ to meet specified design element criteria.

Regarding traffic and car parking issues, the most relevant is Clause 56.06; Access and Mobility

Management, consisting of the following key objectives.

56.06-1: Integrated Mobility Objectives

56.06-2: Walking and Cycling Network Objectives

56.06-3: Public Transport Network Objectives

56.06-4: Neighbourhood Street Network Objective

56.06-5: Walking and Cycling Network Detail Objectives

56.06-6: Public Transport Network Detail Objectives

56.06-7: Neighbourhood Street Network Detail Objective

56.06-8: Lot Access Objective

The assessment of the effectiveness of the road network in meeting the above objectives will be determined

by its ability to provide;

> A safe and accessible road network;

> No incentive for through traffic intrusion;

> Suitable access for emergency and service vehicle access;

> A low speed traffic environment;

> A safe and convenient pedestrian and bicycle network;

> An attractive streetscape with a high level of residential amenity;

> Safe intersection design, with a preference for T-intersections; and

> Sufficient room for drainage systems, public utility services and street lighting.

An assessment of each of the relevant objectives is presented below:

Objective Clause 56.06-1: Integrated Mobility

The intent is to achieve an urban design that is permeable and compact that encourages walking, cycling

and public transport modes, with accessibility to larger activity centres.

The proposed subdivision road network has been designed for substantial integrated mobility networks to be

created with strong linkages to recreational, retail and educational facilities, including the future NAC site

adjacent to the future Elizabeth Drive / Racecourse Road intersection.

Objective Clause 56.06-2 & 56.06-5: Walking and Cycling

The intent is to create subdivisions that encourage walking and cycling within the residential development,

and between surrounding neighbourhoods.

The road network within the proposed subdivision is suitably designed to cater for and encourage both

pedestrian and cyclist trips within and through the area, with on road bicycle lanes and a shared path on

Elizabeth Drive and footpaths on both sides of all streets that have residential frontages.



Objective Clause 56.06-3 & 56.06-6: Public Transport Network

The intent is to encourage the use of existing public transport infrastructure, and to create new services that

provide links to surrounding activity nodes.

The future extension of bus route 489 through the future residential subdivision at 275 Racecourse Road will

service the proposal, with the nearest bus stop to be located at the future Elizabeth Drive / Racecourse Road

intersection, adjacent to the subject site.

Objective Clause 56.06-4 & 56.06-7: Neighbourhood Street Network

The intent is for direct, safe and easy movement through and between neighbourhoods for pedestrians,

cyclists, public transport and other motor vehicles.

The proposed internal subdivision roads consist of individual roads, which fall under different classifications

within Clause 56. It is considered that the layout proposed and the cross section of those roads is

appropriate to promote safe and easy movement through the subdivision for all road users.

Furthermore, the proposed road network will provide adequate clearances to cater for the access

requirements of service and emergency vehicles (e.g. typically up to an 8.8m truck).

Objective Clause 56.06-8: Lot Access

The intent is to provide for safe vehicle access between roads and subdivision lots.

All internal single dwelling lots will have direct access onto the proposed internal road network via

conventional crossovers.



6 Traffic Considerations

6.1 General

As discussed in Section 3.4, traffic modelling for the greater Sunbury area is currently being undertaken by

another consultant for a number of scenarios in conjunction with the preparation of the PSP documentation.

Amongst other things, it is anticipated that the modelling will determine the need for the potential creek

crossing at the northern end of the Lancefield Road PSP area.

As this modelling is not yet complete, the following analysis focuses on the traffic implications of the

proposed development and the proposed road connections that will be in place to support the development.

6.2 Traffic Generation

It is anticipated that the subject site will generate in the order of 8.7 vehicle movements per lot per day. This

rate is based on case study data undertaken by Cardno at the Westleigh Gardens Estate on the Princes

Highway, to the west of the Werribee Town Centre in April 2010.

The Westleigh Gardens estate includes 486 dwellings, and whilst serviced by a local bus route, does not

have any local facilities such as shops or schools within walking distance, and therefore many residents are

dependent on car travel for such activities.

Residential traffic generation during road network peak times, is typically equal to 10 per cent of the daily

traffic generation, however a conservative rate of 1 vehicle movement per lot during the peak hours has

been adopted.

Applying the above rates to the proposed 407 lots, results in a daily traffic generation in the order of 3,541

vehicle movements per day, with 407 vehicle movements in the AM and PM peak hours.

Of the 3,541 vehicle movements per day it is anticipated that approximately 30% will use the northern

access as their primary point of access, with 9% (36 lots) using Hopbush Avenue only. The remainder are

anticipated to use the future Elizabeth Drive / Racecourse Road intersection.

6.3 Daily Traffic Volumes

The anticipated daily traffic volumes associated with the proposal are detailed in Figure 6-1. As shown, all

roads are anticipated to operate within their indicative daily capacities detailed in Table 4-1.



Figure 6-1 Anticipated Daily Traffic Volumes



6.4 Peak Hour Traffic Volumes

6.4.1 Traffic Distribution

It is anticipated that a portion of trips generated by the proposed development will be to the future NAC to be

located adjacent to the future Elizabeth Drive / Racecourse Road intersection, with the balance of trips

anticipated to be towards the south to the Sunbury Town Centre and beyond.

For the purposes of this assessment, the following assumptions have been made:

> The peak hour traffic anticipated to be generated by the 36 lots accessed via Hopbush Avenue (36 peak

hour trips, which is the equivalent of approximately 9% of total peak hour trips anticipated to be generated

by the site) will access Racecourse Road via Hopbush Avenue and travel to / arrive from the south;

> The balance of peak hour traffic anticipated to be generated by the development (371 peak hour trips) will

be distributed as follows:

- A total of 70% of the remaining 371 peak hour trips anticipated to be generated by the site (260 peak

hour trips) will access the site via the primary access at Elizabeth Drive / Racecourse Road

roundabout, of which 30% (78 peak hour trips) will travel straight across Racecourse Road and 70%

(182 peak hour trips) will travel to / arrive from the south on Racecourse Road.

- A total of 30% of the remaining 371 peak hour trips anticipated to be generated by the site (111 peak

hour trips) will access the site via the secondary access to Racecourse Road travelling to / arriving

from the south, of which 30% (33 peak hour trips) will turn into or out of the western Elizabeth Drive

approach at the Elizabeth Drive / Racecourse Road intersection and 70% (78 peak hour trips) will

continue along Racecourse Road at the Elizabeth Drive / Racecourse Road intersection.

The anticipated percentage of inbound and outbound traffic during the AM and PM peak hours is shown in

Table 6-1.

Table 6-1 Residential Subdivisions Traffic Distribution

Peak Period Outbound Inbound

AM Peak Hour 70% 30%

PM Peak Hour 40% 60%

6.4.2 Traffic Volume Growth

It is anticipated that the development will be fully developed in 3 years, or the year 2018. The base case

volumes discussed in Section 2.3 which had growth applied to the year 2018 are therefore considered to be

representative of anticipated future volumes on Racecourse Road when the site is fully developed. As such,

no additional growth has been applied.

6.4.3 Anticipated Peak Hour Volumes

Based on the above, the anticipated peak hour traffic generation and distribution of the proposed

development is detailed in Figure 6-2.



Figure 6-2 Anticipated Peak Hour Traffic Generation and Distribution of Proposed Development

0 0

55 31 23

13

55 31

127 73

0 0

Racecourse Road

AM Peak PM Peak

North

Racecourse Road

Eli

za

be

th D

riv

e

Eliz

ab

eth

Driv

e

Ho

pb

us

h A

ve

nu

e

Se

co

nd

ary

Site

Acc

es

s

0 0

182 104

25 14

0 0

11 22

78 156

78 44

0 0

55 109

23 47

0 0

23 47

0 0

10 20

33 67

0 0

0 0

0 0



6.4.4 Impact of Anticipated Peak Hour Traffic Generation

The anticipated peak hour traffic generation of the development to Hopbush Avenue (36 vehicle movements)

is the equivalent to 1 vehicle movement every 1 – 2 minutes on average. This level of traffic is low in traffic

engineering terms and is not expected to have a significant impact on the operation of Hopbush Avenue.

In relation to the future Elizabeth Drive / Racecourse Road roundabout and the proposed secondary site

access, the anticipated future peak hour traffic volumes are summarised in Figure 6-3.

Figure 6-3 Anticipated Future Peak Hour Traffic Volumes

The operation of the future Elizabeth Drive / Racecourse Road roundabout and the proposed secondary site

access was analysed using SIDRA Intersection. This computer package, originally developed by the

Australian Road Research Board, provides information about the capacity of an intersection in terms of a

range of parameters, as described below:

Degree of Saturation (D.O.S.) is the ratio of the volume of traffic observed making a particular movement

compared to the maximum capacity for that movement. Various values of degree of saturation and their

rating are shown in Table 6-2.

0 0

160 75 30

29

Racecourse Road

North

AM Peak PM Peak

Se

co

nd

ary

Site

Acc

es

s

Eli

za

be

th D

riv

e

0 0

190 104

78 44

0 0

33 67

87 183

23 47

197 231

15 36

Eliz

ab

eth

Driv

e

55 109

72 147

131 271

Racecourse Road

55 31

127 73

0 0



Table 6-2 Rating of Degrees of Saturation

D.O.S. Rating

Up to 0.6 Excellent

0.6 to 0.7 Very Good

0.7 to 0.8 Good

0.8 to 0.9 Fair

0.9 to 1.0 Poor

Above 1.0 Very Poor

It is considered acceptable for some critical movements in an intersection to operate in the range of 0.9 to

1.0 during the high peak periods, reflecting actual conditions in a significant proportion of suburban

signalised intersections.

The 95th Percentile (95%ile) Queue represents the maximum queue length, in metres, that can be

expected in 95% of observed queue lengths in the peak hour; and

Average Delay is the delay time, in seconds, which can be expected over all vehicles making a particular

movement in the peak hour.

The results of the SIDRA Intersection analysis for the future Elizabeth Drive / Racecourse Road roundabout

and the proposed secondary site access are summarised in Table 6-3 and Table 6-4 respectively.

Table 6-3 Anticipated Future Peak Hour Operation – Elizabeth Drive / Racecourse Road

Approach Movement AM Peak PM Peak

D.O.S. 95%ile Queue (m)

Average Delay (s)


Average Delay (s)

Racecourse Road (S)

Left 0.21 9 4 0.39 20 4

Through 0.21 9 5 0.39 20 5

Right 0.21 9 9 0.39 20 9

Elizabeth Drive (E)

Left 0.20 8 6 0.11 4 6

Through 0.20 8 7 0.11 4 6

Right 0.20 8 11 0.11 4 11

Racecourse Road (N)

Left 0.19 8 6 0.12 5 6

Through 0.19 8 6 0.12 5 6

Right 0.19 8 10 0.12 5 11

Elizabeth Drive (W)

Left 0.20 8 5 0.31 14 6

Through 0.20 8 5 0.31 14 6

Right 0.20 8 10 0.31 14 11

Intersection 0.21 0.39



Table 6-4 Anticipated Future Peak Hour Operation – Proposed Secondary Site Access

Approach Movement AM Peak PM Peak


Average Delay (s)


Average Delay (s)

Racecourse Road (S)

Through 0.07 2 0 0.14 3 0

Right 0.07 2 6 0.14 3 6

Secondary Site Access (E)

Left 0.06 2 6 0.03 1 6

Right 0.06 2 6 0.03 1 6

Racecourse Road (N)

Left 0.11 0 6 0.06 0 6

Through 0.11 0 0 0.06 0 0

Intersection 0.11 0.14

Review of Table 6-3 and Table 6-4 indicates that both intersections are expected to operate within the

‘Excellent’ category, with minimal queues and delays.



7 Conclusions

Based on the preceding discussion it is concluded that:

> The proposed development will comprise a total of 407 residential lots;

> The primary site access is proposed via the future Elizabeth Drive / Racecourse Road roundabout, with a

fourth eastern leg extending Elizabeth Drive into the site. A second fully directional site access to

Racecourse Road is proposed towards the northern end of the site, between Emu Road and Albert Road,

whilst the southern portion of the site will be separated internally from the balance of the site by a reserve

and is proposed to be provided access via the existing Hopbush Avenue;

> The proposed road cross sections are considered appropriate, being generally in accordance or in excess

of the requirements of Table C1 of Clause 56.06-8 of the Hume Planning Scheme, with the proposed

Elizabeth Drive cross section consistent with the future cross section of Elizabeth Drive through the future

residential subdivision at 275 Racecourse Road;

> The proposed road network, accessibility to public transport routes and pedestrian and cycling

connectivity through the proposed development are considered appropriate; and

> The development is anticipated to generate in the order of 3,541 daily vehicle movements and 407 peak

hour vehicle movements and is expected to be comfortably accommodated by the proposed internal road

network and the surrounding road network.


25 June 2015 Cardno 29

Sherwood Heights Residential Subdivision – Racecourse Road, Sunbury

APPENDIX

A APPROVED ELIZABETH DRIVE / RACECOURSE ROAD INTERSECTION FUNCTIONAL DESIGN

12/01/

2015

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50MM PVC

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AUSTROADS 2006 (AU)

S

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7.69m

S ARTICULATED 19M

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DS 2006 (

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S ARTICULATED 19M

AUSTROADS 2006 (AU)

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DS 2006 (

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S

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7.38m

S

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DS 2006 (

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S ARTICULATED 19MAUSTROADS 2006 (AU)

S

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SCALE - 1:2000 @ A3 DATE - 12.01.15

ELIZABETH DRIVE

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SKETCH CG130479SK08 - P1MELWAY MAP REF 362 D10

INTERIM FUNCTIONAL LAYOUT PLAN - SWEPT PATH ANALYSIS

DESIGN VEHICLE

13.70

1.60 5.30

4.20

0.20

1.40 9.50

Articulating Angle

Lock to Lock Time

:2.50Trailer Width Steering Angle

Tractor Track

Trailer Track

:2.50

2.50:

Tractor Width

S ARTICULATED 19M

2.50:

meters

27.7:

70.0:

6.0:


25 June 2015 Cardno 31

Sherwood Heights Residential Subdivision – Racecourse Road, Sunbury

APPENDIX

B PROPOSED ELIZABETH DRIVE / RACECOURSE ROAD INTERSECTION FUNCTIONAL DESIGN

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