Recent Question/Assignment

Proposed residential development at former Chivers factory, Coolock Drive, Dublin 17
Masters assignment
Traffic Assessment, Parking and Mobility Report for proposed development
DT9417/9418
September 2018
Dr Martin Rogers
Transport Planning Professional
1 INTRODUCTION
It is proposed to construct 500 No. apartments at the old Chivers site on Coolock Drive.
A site plan of the proposal is contained within Figure 1.
It is proposed to provide 400 No. car parking spaces and 500 No. cycle spaces.

In terms of the traffic assessment for the proposal, this report must demonstrate that the development quantum of 500 No. units will result in no effective deterioration in the performance of critical traffic movements at the critical nearby junctions
In terms of mobility management issues, this report should use 2016 census data to demonstrate that it is entirely sustainable to assume that a significant proportion of residents will have no available car space within the proposed development.

The traffic assessment within this report will assess the existing and day-of-opening flows at the following two junctions in the vicinity of the proposed development. This is completed in order to assess the impact of the proposed development on the efficient working of these junctions:
1. Coolock Drive / Oscar Traynor Road (signalised junction)
2. Coolock Drive / Greencastle Road (priority junction)
Section 2 of the report should provide details of the site location and the existing local road network.
Section 3 should detail the traffic predicted to be generated by the proposed development.
Section 4 should provide the traffic analysis of the 2 No. junctions under scrutiny.
Section 5 should demonstrate the level of compliance of the proposed development with the parking requirements of Dublin City Council and the Sustainable Urban Housing Design Standards for New Apartments (March 2018), and utilise 2016 Census data to demonstrate that it is entirely reasonable to assume a significant proportion of of residents will not require a permanent car space.
Section 6 should detail the public transport and soft mode access that would be available to residents and visitors at the proposed development.
Section 7 should make some concluding comments regarding the sustainability of the proposed project in transportation terms.

2 SITE LOCATION, EXISTING ROAD NETWORK AND DETAILS OF TRAFFIC SURVEYS UNDERTAKEN
The site is located east of Coolock Drive, approximately 500 metres north-east of its junction with Oscar Traynor Road and approximately 500 metres south-west of its junction with Greencastle Road.
The location of the site relative to these two junctions is detailed within Figure 2.
Given that the proposed development is residential, peak flows will typically occur on weekdays, between 7am and 9am in the morning and between 4pm and 6pm in the evening.
Accordingly, a traffic survey was carried out on Thursday 14th September 2017 at the 2 No. critical junctions.
The survey was carried out over a 12-hour period between 0700 and 1900 in order to ascertain the peak hour flows for all traffic movements at the 2 No. junctions.
The surveys indicated that the weekday morning peak occurred between 0800 and 0900 with the evening peak occurring between 1600 and 1700 – these were observed to be the timeframes during which the junctions were most heavily loaded. The following analysis is based on these peak periods.
The morning and evening peak hour flows for Thursday 14th September 2017 for both critical junctions are detailed in Figures 3 and 4 respectively.
It is assumed that the proposed development will open in 2019. (Given the low growth rates assumed, slippage in this figure will have no perceptible effect on the analysis within this report.)
The 2017 survey will be factored up by approved NRA growth rates in order to derive both the 2019 day-of-opening network flows. (The relevant NRA document is the Project Appraisal Guidelines: Unit 5.5, Link-Based Traffic Growth Forecasting)

3 WORK PACKAGE 1 - TRIP GENERATION, DISTRIBUTION AND ASSIGNMENT ANALYSIS FOR PROPOSED DEVELOPMENT (USING TRICS PACKAGE?)
4 WORK PACKAGE 2 - TRAFFIC IMPACT ASSESSMENT OF PROPOSED DEVELOPMENT ON 2 NO. ADJACENT MAJOR JUNCTIONS
SEE FIGURES 3 TO 6.
WP1 + WP2 = traffic assessment
5 WORK PACKAGE 3 - COMPLIANCE WITH PARKING REQUIREMENTS OF DUBLIN CITY COUNCIL AND APARTMENT GUIDELINES
6 WORK PACKAGE 4 - MOBILITY PLAN - PUBLIC TRANSPORT, WALKING AND CYCLING FACILITIES SERVING THE PROPOSED DEVELOPMENT
WP3 + WP4 = mobility management plan
7 WORK PACKAGE 5 - OVERALL CONCLUSIONS REGARDING SUSTAINABILITY OF PROPOSED RESIDENTIAL DEVELOPMENT IN TRANSPORTATION TERMS
Student must complete all 5 work packages
DELIVERABLES
1. FINISHED REPORT WITH ALL NECESSARY WORK PACKAGES

Figure 1: Site plan indicating the location of the proposed development
Figure 2: Location of site relative to 2 No. major junctions in its vicinity

Figure 3: Existing flows at Oscar Traynor and Greencastle Road junctions - AM Peak

Figure 4: Existing flows at Oscar Traynor and Greencastle Road junctions – PM peak

Figure 5: Development flows incident on Oscar Traynor and Greencastle Road junctions – AM peak

Figure 6: Development flows incident on Oscar Traynor and Greencastle Road junctions – PM peak

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