conradie better living model exemplar project

414 Pages·2016·37.36 MB·English

O
REPORT N 20527.R
CONRADIE BETTER LIVING
MODEL EXEMPLAR
PROJECT
TRAFFIC IMPACT ASSESSMENT
FINAL
CONFIDENTIAL JULY 2016
CONRADIE BETTER LIVING
MODEL EXEMPLAR PROJECT
Traffic Impact Assessment
Report (Ver 1.3)
FINAL
Confidential
Project no: 20527
Date: July 2016
–
WSP | Parsons Brinckerhoff
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Waterfront, Cape Town, 8001, South Africa
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Q U A L I T Y M A N A G E M E N T
ISSUE/REVISION FIRST ISSUE REVISION 1 REVISION 2 REVISION 3
Remarks Ver 1.0 (Draft) Ver 1.2 (Draft) Ver 1.3 (Final)
Date April 2016 April 2016 6 July 2016
Christo Bredenhann Christo Bredenhann Christo Bredenhann
Prepared by
Pr Eng Pr Eng Pr Eng
Signature
Tobie Ueckermann
Checked by
Pr Eng
Signature
Patrick Riley
Authorised by
Pr Tach Eng
Signature
Project number 20527.R 20527.R 20527.R
Report number 20527 _TIA _Ver 1.0 20527 _TIA _Ver 1.2 20527 _TIA _Ver 1.3
Z:\20000 - Z:\20000 - Z:\20000 -
20999\20527 - 20999\20527 - 20999\20527 -
Conradie Game Conradie Game Conradie Game
File reference
Changer Project\3. Changer Project\3. Changer Project\3.
Civils\11 - Reports\02 Civils\11 - Reports\02 Civils\11 - Reports\02
- Transport\05 - TIA - Transport\05 - TIA - Transport\05 - TIA
Conradie Better Living Model Exemplar Project WSP | Parsons Brinckerhoff
Project No 20527
June 2016 Confidential
Digitally signed by
Bredenhann, Christo
Reason: I am the author
of this document
Date: 2016.07.07
11:59:26 +02'00'
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P R O D U C T I O N T E A M
CLIENT
Western Cape Provincial Government
Cape Town
South Africa
WSP | PARSONS BRINCKERHOFF
Project Member Christo Bredenhann Pr. Eng
Project Leader Kathy Ziehl-Roux Pr. Eng
Project Director Patrick Riley Pr. Tech Eng
SUBCONSULTANTS
Nick Venter: Traffic counting
GIBB Engineering & Architecture: Odin Road Extension Conceptual Design
Wilfred Crous: EMME 4 Transportation modelling
Conradie Better Living Model Exemplar Project WSP | Parsons Brinckerhoff
Project No 20527
June 2016 Confidential
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EXECUTIVE SUMMARY
WSP Group Africa (Pty) Ltd (WSP) has been appointed as part of a Transaction Advisory Team by the
Provincial Government of the Western Cape (PGWC) to undertake a Traffic Impact Assessment (TIA) of
the proposed Conradie Better Living Model Exemplar Project (BLMEP). The purpose of this report is to
consider the traffic impact that the proposed land-use rights will have on the surrounding road network,
and to propose mitigating measures to address these impacts.
The Western Cape Provincial Cabinet has identified the Conradie Integrated Better Living Model Game
Changer intervention. The “Integrated Better Living” Model seeks to efficiently design, fund and
develop the former Conradie Hospital site with residentially led, integrated and affordable development
with the intention of establishing key replicable levers to unlock state property.
The proposed Conradie BLMEP will be situated on a 22 ha site, Erf 112657 located between the
suburbs of Pinelands, Thornton and Maitland. The site is approximately 9,0 km east of the Cape Town
CBD. It is located between the Elsies Kraal River canal to the south-east, the Central railway line to the
west and Forest Drive Extension to the north.
The trip generation and capacity analysis of this TIA was based on the land-use mix as contained in the
Development Framework, dated December 2015, namely:
o Grant funded housing 1,723 dwelling units
o Open-market housing 1,880 dwelling units
• Total residential 3,603 dwelling units
• Offices 14,680m² GLA
• Retail/ service industry 10,192m² GLA
• Education 2 x public schools with 770 learners each
• Other Sports field, community facilities/hall, public open space, other.
The land-use mix was subsequently revised to incorporate the results of the various impact
assessments. The revision land-use listed below will result in a lower trip generation for the
development, primarily due to the total number of grant funded and open market housing units that has
changed. The trip generation in this TIA is therefore conservative.
o Grant funded housing 1,805 dwelling units
o Open-market housing 1,800 dwelling units
• Total residential 3,605 dwelling units
• Offices 14,714 m² GLA
• Retail & service industry 9,588 m² GLA
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• Education 2 x public schools with 770 learners each
• Other Hall, admin office, sports hall, public open space.
A phased development is proposed, however the exact implementation period per phase, and ultimate
number of phases is not known. The developer will determine the phasing. The TIA considered the
following phasing:
• Phase 1: 2018 - 2019
• Phase 2 2020 - 2021
• Phase 3 2022 – 2025
The extent of the study area and the scope of the TIA were confirmed by the City of Cape Town,
Transport for Cape Town (TCT). All the affected intersections in the vicinity of the site were analysed,
namely:
• Forest Drive extension/Mupine local access
• Forest Drive extension/Anfield Village local access
• Forest Drive Extension/Mutual Road
• Mutual Road/Jan Smuts Drive
• Jan Smuts Drive/Forest Drive
• Odin Drive/Thor Circle/Albatross Way
• Odin Drive/Viking Way
• Odin Drive/Gunners Circle
• Viking Way/Sipres Avenue
• Sipres Avenue/Gunners Circle
• Viking Way/Jakes Gerwel Drive (M7)
• Jakes Gerwel Drive (M7)/Denneboom Avenue: (western off-ramp terminal)
• Jakes Gerwel Drive (M7)/Denneboom Avenue: (eastern off-ramp terminal)
• Denneboom Avenue/Sipres Avenue
• Jakes Gerwel Drive (M7)/Voortrekker Road
• Voortrekker Road /18th Avenue
• Future Voortrekker Road /Odin Road Extension
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June 2016 Confidential
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• Future Odin Road Extension / Class 4 route
• Future internal roundabout
There are no known latent developments in the study area with development rights in-place that will
have an impact on the road network. The proposed Old Mutual Mupine residential development along
Forest Drive Extension will be located directly north of the site. The future of this development is not
confirmed and its potential latent traffic was not considered.
The development is well located however access to the major road network is constrained due to the
Elsies River canal, railway lines and the Maitland cemetery. The road network in the vicinity of the site
is severely constrained, and has been for many years as detailed in the 2006 GIBB TIA. The weekday
AM peak is the most critical period.
Access to the major road network will be improved with the proposed Odin Road Extension from Viking
Way to Voortrekker Road. The conceptual design of this link has been undertaken by GIBB. An Emme
4 transport model was utilised to inform the phased implementation and capacity of the Odin Road
Extension. The model was also utilised to determine the expected back-ground traffic redistribution and
its effect on the local intersections. The capacity analysis of the new and affected intersections were
undertaken to incorporate the ultimate trip redistribution. The model found that a phased
implementation of the Odin Road Extension will be sufficient to support the phased development.
Phase 1 is the construction of the link over the canal to provide access to Viking Way, and is required
for the first phase of the development. The Phase 3 development will require the remaining link to
Voortrekker Road. A Class 4 local distributor traversing the site will be required from the new Odin
Road Extension to Forest Drive Extension for Phase 1 off the development.
Local access to the site will be via 2 accesses off Forest Drive Extension and an access off Odin Road
Extension over the canal. An NMT access will also be provided to Thor Circle. Access spacing along
Forest Drive Extension will be sub-standard for signalised intersections, however a progression analysis
confirms that sufficient progression of over 30% will be possible during the weekday AM peak. This is
subject to the final intersection signal timing plans. Note that the TIA proposes signalisation of the
eastern access off Forest Drive Extension and a priority controlled intersection opposite the Mupine
access. This intersection will require signalisation in future if the Mupine development proceeds.
The Conradie BLMEP will be a Transit Oriented Development. Although the site will not have a rail
station at its centre, however the bulk of the development will be located within an 800 m radius of the
Mutual Station and this radius of the Thornton Station. The Conradie BLMEP site will be served by
Metrorail’s Central Line, Northern line and Boland (Paarl) and Northern (Strand) Business Express
services via Mutual Station. The station provides direct access to the majority of Metrorail’s’
destinations, as it is a junction station located on multiple lines. It is the second busiest station in the
Western Cape Town Station. As per the CITP (2014 mini review), Long-term strategy C of TCT is to
provide public transport services to 80% of Cape Town’s residents within 500 m. The Conradie BLMEP
will be located directly adjacent to Forest Drive Extension, a current and future public transport route,
and all residents will be within 500 m of this service. The urban design layout was informed by TOD
principles and will provide and promote Non-motorised transport facilities and usage, as well as reduced
parking provision.
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A future IRT feeder route is planned along Forest Drive Extension, and its potential stops adjacent to
the site will provide additional public transit opportunities in close proximity to the Conradie BLMEP
development. Two future IRT trunk services will be located along Jan Smuts Drive, and will be
accessible either directly from the site or via the feeder service that will operate along Forest Drive
Extension. The development of the Conradie BLMEP may see the establishment of additional bus or
IRT routes to and from or via the site. The provision of a public transport stops and a facility within the
site will be considered by the developer in-line with TCT policies.
The proposed parking provision for the site is lower than the current CoCT zoning scheme
specifications. A departure for reduced parking provision will be applied for as part of the Rezoning
application. The reduced parking is motivated in terms of a Transit Oriented Development, proximity to
rail and bus transport, as well as the social housing component of the development. Shared parking
between the residential and non-residential land-uses is possible due to the urban design of the
development. The on-street parking provision along the new internal road network will form part of the
total parking supply. A total of 2001 parking bays can be provided, 1490 off-street bays and 511 on-
street bays. The following parking provision ratios are proposed:
• Grant funded housing 0.25 bays / dwelling unit
• Open-market housing 0.75 bays / dwelling unit
• Offices 4 bays / 100 m² GLA of which 90% is shared parking
• Retail/ service industry 4 bays / 100 m² GLA of which 90% is shared parking
Parking management will be required as part of the developer responsibilities and future management
of the Conradie BLMEP to ensure the preservation of the NMT focussed urban design focus of the site
as well as to ensure unhindered access and mobility to and from the site. This will include paid parking
for on-street and off-street bays and management of the shared parking bays. The reduced parking
ratios of less than 1 bay per dwelling unit will also mean that no residential units may be allocated with a
dedicated bay.
Trip generation rates and trip reduction factors were determined as per TMH17 specifications. The
comparative trip generation of social housing developments, and the Emme 4 transport model trip
generation rates are in-line with the expected total trip generation of the development. The full Phase 3
development is expected to generate a total of 1315, 1702 and 1218 veh trips during the weekday AM,
PM and Saturday AM peak periods. The expected trip distribution and assignment of the phased
development was informed by the Emme 4 Gravity model, which considers network congestion, city
wide origin destination per macro zone and trip lengths.
Capacity analysis was undertaken to determine the major road infrastructure and intersection upgrades
that will be required. The following upgrades, per phase, will be required:
Phase 1 & 2
• Access 1 off Forest Drive Extension (revised geometry)
• Access 2 off Forest Drive Extension (revised geometry, new south approach leg, signalised)
Conradie Better Living Model Exemplar Project WSP
Project No 20527
June 2016 Confidential