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Published byJack Powers Modified over 9 years ago
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Transportation Planning George Willlooughby, Senior Executive Engineer Roads, Transportation & Public Safety Department 19 th May 2015
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Transportation Design Guidance DMURS NTA Funding Road Schemes Typical Information Additional Information Requests 2
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Design Guidance NRA DMRB – Road link & junction design – Sightlines – TD 41-42 revised in 2011 – Now includes design standards for local and regional roads Traffic Management Guidelines – Junction design, VRU facilities, traffic calming NTA National Cycle Manual – Cycle facilities DMURS – Design Manual for Urban Roads and Streets – Published 2013 – Replaces DMRB in urban areas 3
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DMURS Design Manual for Urban Roads & Streets – Jointly Published by DTTAS & DoECLG in March 2013 – For use in urban areas – cities, towns & villages – Applies to ALL roads & streets in urban areas except: Motorways In exceptional circumstances, certain roads & streets with the written consent of a sanctioning body (NRA, NTA, DTTAS) – Use of the Manual is mandatory, and it supercedes the DMRB in urban areas Purpose – Fill a policy gap Emphasis in road design standards on catering for vehicular traffic DMRB has been used as a default standard – Provide practical design measures to implement Government Policy e.g. Smarter Travel (2009) Sustainable Residential Development in Urban Areas (2009) Draft Planning Guidelines: Local Area Plans (2012) 4
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DMURS – Proliferation of ‘Distributor’ type roads: Almost ‘free-flow’ conditions Wide, open roads No active frontage Accesses minimised No parking – Creates a hostile environment for VRU’s: Promotes faster, inappropriate speeds Severs communities Reduces access to public transport Lack of surveillance Inhospitable crossing facilities Need for DMURS – Car dependence is now built-in to urban areas as the norm – Application of DMRB - prioritisation of vehicular traffic over other modes 5
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DMURS What DMURS Promotes: – A balanced approach to street design Recognise that roads/streets have many functions, and balance function and context – Better Connected Communities 6 Conventional Network Dead ends Higher Speed & Volume External Roads Larger Junctions DMURS Network Connected Streets Traffic Calmed Streets Smaller Junctions
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DMURS 7 Self-Regulating & Liveable Streets: Speed based on a visual/psychological interpretation of the street Regulation plays a secondary role Place Making & Attractive Streets Example of a street in Youghal, Before & after
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DMURS Application of DMURS – Promotes a multidisciplinary approach to street design – Offers guidance for all stages of development, from plan preparation to detailed design – Contains a range of measures & guidance for Architects, Engineers, Planners, Landscape Architects etc. – Manual includes a range of ‘hard’ & ‘soft’ measures to create self-regulating streets, including: Building heights & street widths Hard & soft landscaping Active street edges Signage & road markings Street furniture Materials & finishes Reduced horizontal & vertical alignment standards Reduced stopping sight distances & visibility envelopes Reduced corner radii & junction geometry 8
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NTA Funded Schemes NTA Sustainable Transport Measures Grants (STMG) Annual funding to improve VRU facilities and to encourage use of sustainable travel modes. Wide range of schemes completed including: – Swans Junction (Naas) – Johnstown roundabout upgrade – Captains Hill junction upgrade (Leixlip) – Fortbarrington Road junction (Athy) – Various footpath improvement schemes (e.g. Rathangan, Ardclough, Prosperous, Athy, Caragh, Athgarvan, Castledermot) Approx. 1.4 million secured for 2015, examples of schemes include: – Bus Hub Main Street Naas (Part 8 approved, to go to construction) – Dublin Road Naas (Part 8) – Maynooth North South Corridor(Part 8) – GDA Cycle Network 3 schemes, newbridge rd to sallins, kill to maudlins, kilcullen rd to naas (design and Part 8) 9
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Road Schemes R407 Enfield – Edenderry: Construction completed including Kilshanroe and Johnstownbridge works. Sallins Road roundabout improvement works. – Construction due to start in Q3 2015. Athy Southern Distributor Road: – Route selection & preliminary design to be completed – Preparation of CPO documents & detailed design Dunmurray Link Road: – Design substantially completed. – Construction due to start in Q3 2015. Newbridge Link Road: – Design to be completed – Engagement with adjacent developers ongoing 10
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Submission Information Pre-Planning: – Location map – Preliminary Site Layout, if available – Access Proposals – Preliminary estimate of likely trip generation & car parking demand Application: – Detailed site layout & access proposals – Full details of sight lines (DMRB or DMURS as appropriate) – Estimate of number & type of traffic movement – Traffic & Transportation Assessment (Consult with Transportation Dept. at Pre-Planning to determine scope) – Road Safety Audit Stage 1, where required – Travel Plan where applicable – Mobility Plan where applicable. – Robust estimate of car parking demand & associated parking layout 11
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Common AI Requests Sight lines: – No sight lines shown – Full extents not indicated – Boundaries unclear (Topographical survey often required – OS mapping is rarely sufficient) – Sight lines not in accordance with standards (insufficient ‘y’ distance, drawn incorrectly etc.) Traffic & Transportation Assessment: – Insufficient count data provided – 12 hour counts required as a minimum (See NTA Specification for Traffic Counts for guidance) – Full input data not included (Counts, TRICS etc.) – Full output data not included (All software outputs to be included) – Assumptions not clearly stated, or lacking in justification Travel Plans, Mobility Plans, Road Safety Audits or other supporting documentation required – Consult at Pre-Planning Stage to determine if needed Car Parking: – No assessment of likely car parking demand – No comparison with Development Plan standards – Change of use applications – Comparison with existing & proposed uses 12
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