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Auditing the Construction of Luas

Auditing the Construction of Luas. 15 th May 2018 Gerry Higgins – TII Traffic Section. Presentation Agenda. 1: - INTRODUCTION What is an LRT ?? LRT - Unique Characteristics LRT - Design and Construction LRT - Safety Considerations 2: - SAFETY, CONSTRUCTION AND OPERATION

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Auditing the Construction of Luas

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  1. Auditing the Construction of Luas 15th May 2018 Gerry Higgins – TII Traffic Section

  2. Presentation Agenda • 1: - INTRODUCTION • What is an LRT ?? • LRT - Unique Characteristics • LRT - Design and Construction • LRT - Safety Considerations • 2: - SAFETY, CONSTRUCTION AND OPERATION • What is Luas Cross City ?? • LCC 400 - Main Infrastructure Contract • LCC - Competing demands • LCC - The Authorisation Requirements • 3: - THE AUDIT PROCESS • LCC - Temporary Traffic Management (TTM) Audits • Road Safety Audit – GE-STY-01024 • LCC - Road Safety Audit – Main Issues • LCC - Route Hazard Record Log

  3. What is an LRT ?? • Light Rail Transit (LRT), or fast tram is a form of urban rail transport using rolling stock similar to a tramway, but operating at a higher capacity, and often on an exclusive right-of-way. Courtesy of Wikipedia • Currently the Luas vehicles are 43metres long but an extended 55metre vehicle is being phased into the fleet • Track Gauge – 1435mm • Power supply (750v DC) is via an Overhead Catenary System (OCS) • Subject to relevant speed limits - CBD - 30km/h - outside CBD - 50 km/h - off road – generally 70km/h • Luas operates on a ‘Line of Sight’ principle

  4. LRT – Unique Characteristics • LRT – the current 43m vehicles are equivalent to 3.5 buses end to end • LRT Braking – 3 m/s Requires approximately twice the stopping distance of a bus travelling at the same speed • Dynamic Kinetic Envelope (DKE) - ‘the footprint or maximum width of a tram in motion’ • Swept Path - ‘provides an additional allowance which is determined on site, for pedestrian or road vehicle safety’ • Lateral clearances (incl. end throw) • Vertical clearances • OCS and power supply

  5. LRT Design Guidance – Guidelines for the Design of Railway Infrastructure Stock (GDIRS ) Section 2 - Stations Spatial design Platforms Terminus Features Evacuation Fire Precautions Section 7 – Tramways Integrating The Tramway Clearances Civil engineering works (track and structures, access control) Tram stops

  6. LRT Safety Considerations It is an criminal offence to undertake works within 25m of a Luas alignment, without a Luas permit Luas Central Control Room (CCR) – 01 467 3040 Dial 999 or 112 High voltage (750v DC) power cables – assume all cables are live Beware of moving trams No works should encroach within the 2.75m envelope around the overhead cables

  7. What is Luas?? What is Luas Cross City (LCC)?? • Luas network - 54 platforms, • - 36.5 kilometres of public track, • In 2017 Luas carried 37.6 million passengers (80,000 per day), • an increase of 10% compared to 2016. • Luas Cross City - 13 platforms • - 5.9 kilometres • 35 traffic signal locations (25 signalised junctions & 10 pedestrian crossings)

  8. LRT Construction – Adapting DMRB Road Standards – Hybrid Design - Difficult Road/Rail integration – geometrical constraints, utility diversions, property thresholds / access during operation

  9. LCC 400 – Main Infrastructure Contract Construction Phase – 2015 to 2017

  10. LCC 400 – Main Infrastructure Contract Construction Phase – 2015 to 2017

  11. LCC – Commencement of Operations- 9th December 2017

  12. LCC – Commencement of Operations- 9th December 2017

  13. Luas Cross City – Competing demands Compared with existing Luas Lines– LCC has : • Increased % of sharing with other transport modes (public transport / road vehicles / cyclists) • Higher volumes of pedestrians and cyclists • Higher volumes of kerbside parking / deliveries • Greater level of stakeholder consultation and management • Higher volume of adjacent development schemes

  14. Luas Cross City – Competing demands • Increased % of sharing with other transport modes (public transport/ road vehicles / cyclists)

  15. Luas Cross City – The Authorisation Requirements • Design compliant with GDIRS / DMURS / TSM / Legal Statutes and many others ! • Railway Order approved by An BordPleanala • Required consent of the Commission for Rail Regulation (CRR) via the Authorisation to Place in Service (APIS) process • Approval of the Road Authority (ie Dublin City Council) via an MoU with DCC

  16. Luas Cross City –Temporary Traffic Management (TTM) • All LCC TTM designs (drawings and method statements) reviewed with the Contractor for compliance with TSM Chapter 8 etc prior to submission to the Road Authority (DCC) for approval. • All LCC TTM sites were audited a minimum of once a week • TII undertook ongoing consultation with all stakeholders during construction • TTM audits discussed weekly at Traffic Forums with LCC Stakeholders

  17. Luas Cross City –TTM Traffic Forums • Weekly TTM meetings were attended by TII / DCC / NTA / An Garda Siochana / Dublin Bus / Bus Eireann / Contractor’s Construction and TM representatives • Forward planning re conflicting / or complementary public events • Dissemination of proposed construction areas and timelines to the other stakeholders via TII Public Relations • Discussion and resolution of complaints / delays / non-compliant practices and audits

  18. Luas Cross City –TTM Phasing Plans

  19. Luas Cross City – TTM Drawings

  20. Luas Cross City –TTM Drawings

  21. Luas Cross City –TTM Audit Comments

  22. Luas Cross City –TTM Audit Comments

  23. Luas Cross City –TTM Audit Comments

  24. Road Safety Audit – (GE-STY-01024) TII Publications GE-STY-01024 Road Safety Audit December 2017 2. Road Safety Audit 2.1 Schemes to be audited This Standard shall apply to all National Road Schemes. This includes work carried out under agreement with the Overseeing Organisation resulting from developments alongside or affecting the National Roads. The Standard sets out two categories of scheme: Road Scheme. A scheme results in new road construction or permanent change to the existing road or roadside layout.  Development Scheme. A scheme which results in a change to the road or roadside layout that is initiated and/or executed for commercial or private development. A Road Safety Audit is required on any piece of road infrastructure which requires a design. No Audit is required on like-for-like repair or replacement of existing road infrastructure. 2.2 Scope of the Audit The Road Safety Audit shall only consider matters that have an adverse bearing on road safety. It shall consider safety under all operating conditions. The primary purpose of a Road Safety Audit is to identify potential safety hazards within the scheme design or construction as they could affect all road users. A Road Safety Audit is not a check of compliance with design standards. The audit shall not be concerned with structural safety.

  25. Road Safety Audit – (GE-STY-01024) • A Road Safety Audit (RSA) is an evaluation of road schemes during design and construction to identify potential hazards to all road users. • TII GE-STY-01024 - Road Safety Audit standard can be downloaded here (http://www.tiipublications.ie/library/GE-STY-01024-07.pdf). • RSA is a check for safety issues within a scheme rather than an identification of non-compliance with design standards, particular attention being paid to the needs of vulnerable road users. The 5 Stages of Road Safety Audits Some RSA stages may be omitted or combined for minor schemes or temporary works. • Stage F (Feasibility): Route selection stage is carried out before the route is chosen. • Stage 1: Completion of preliminary design - examine the plans and additional information provided. A site visit is required. • Stage 2: Completion of detailed design - A site visit is required. • Stage 3: Completion of construction- (generally this takes place prior to opening to traffic) - Site visit required in daylight and darkness. • Stage 4: Early operation at 2-4 months after road opening: The site must be visited again in daylight and darkness during the Stage 4 audit. Check for road safety issues in light of the behaviour of road users including evidence of collisions on site. Road Safety Audit Reports and Subsequent Actions The Final Audit Report shall contain: • The Audit Brief • Letter of approval from TII approving the Employer to appoint the Audit Team • Audit Report • Designer Response/Feedback form • Exception Report if applicable • Director’s decision if applicable

  26. LCC Road Safety Audit – Stage 1 – Audit Comments • Footpaths are narrow and in poor condition • Realigned entrance to Temple Cottages appears to be very steep • Platform for the stop is on the existing footpath and will be required to tie into the threshold of the existing frontages • Where the Luas changes from segregated to shared, the road is not clearly defined and could lead to hesitation and collisions • The geometry of the central island and the extended footpath implies that a left turn is available • In front of Trinity College between College Green and Westmoreland St the Luas is on a road with shared usage. This could lead to collisions with cars or rear end shunts

  27. LCC Road Safety Audit – Stage 2 – Audit Comments Assessed using NRA DMRB HD19. Tram projects into traffic lane Tram may block junction / pedestrian crossing Misinterpretation of signal Lane guidance through junction Abrupt decision point Guidance for partially sighted pedestrians Inconsistent use of paving type P6 – (Tram Lane Designation) Vehicles turning onto Luas line Vehicles between trams - Location: Dawson Street Stop Footway cross fall excessive Traffic signals in close proximity to each other - Location: Depot Access Road, Constitution Hill, Western Way Layout of tactile paving Tram line ahead cyclist warning signs Crossover for cyclists - Location: Marlborough Street at Lower Abbey Street

  28. LCC Road Safety Audit – Stage 2 - Localised Audits

  29. LCC Road Safety Audit – Stage 3 – Audit Comments LCC Alignment divided into 9 separate areas Inconspicuous Roadway - Saint Stephen’s Green/Grafton Street Night time lighting Narrow Footpath Water on Footpath ‘No Straight Ahead’ Signs - Dawson Street/Molesworth Street Junction Cyclists crossing tram rails - College Green Pedestrians may dwell on tram rail - Marlborough Street/Fleet Street Buses adjacent to platform - O’Connell Street Stop Vehicles entering tram lane - Dominick Street Lower

  30. Luas Cross City– Route Hazard Record Matrix Route Hazard Record is a safety assessment of the design and operational related issues If an identified risk cannot be designed out, the risk is logged and managed by the Luas Operator (Transdev Ireland) This is a dynamic document and is regularly updated Record is subject of regular discussions with CRR

  31. Luas Cross City – Route Hazard Log

  32. In Summary…………

  33. 1. – Review the supplied drawings and documents and establish whether more information is required

  34. 2. - Visit the site, assess and collect the data…………….

  35. 3. Mitigate the issue / Implement the action / Agree an Exception / Record, Manage and Close out!!

  36. Thank you !!

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