Appendix Y Technical Note 6: Mitigation

States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

JFH-ARP-ZZ-XX-TN-Y-0029

P2 | 23 June 2017

This report takes into account the particular instructions and requirements of our client. It is not intended for and should not be relied upon by any third party and no responsibility is undertaken to any third party.

Job number 237035-00

Ove Arup & Partners Ltd Central Square Forth Street Newcastle upon Tyne NE1 3PL United Kingdom www.arup.com

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States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

Contents

Page

1 Introduction 1 1.1 Background 1 1.2 Future Scenarios 3

2 Junction Assessments 4 2.1 Junction 1/3/8/12/13/14: Esplanade Network 4 2.2 Junction 4: Elizabeth Place/Rouge Bouillon/Saville Street 15 2.3 Junction 5: The Parade/Union Street 17 2.4 Junction 6: St Aubin’s Road/A1 19 2.5 Junction 7: St Aubin’s Road/Kensington Street/Peirson Road 21 2.6 Junction 10: St Aubin’s Road/Westmount Road 22 2.7 Junction 11: St Johns Road/Old St Johns Road/West Park Avenue/Cheapside 23 2.8 Junction 13: Gloucester Street/Seaton Place Pedestrian Crossing 25 2.9 Junction 14: Gloucester Street/Newgate Street 26 2.10 Junction 15: Lewis Street/Kensington Place 28 2.11 Junction 16: Lewis Street/Kensington Street 28

3 Mitigation Summary 29

4 Future Junction Modelling Summary 31

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States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

1 Introduction

1.1 Background Ove Arup & Partners Ltd (Arup) is preparing a Transport Assessment on behalf of Jersey Future Hospital in support of a planning application for the development of a new hospital and associated works in St Helier, Jersey. The development site includes land partially occupied by the existing Jersey General Hospital. Following discussions with the Department for Infrastructure (DfI) Transport Policy it has been agreed that a series of technical notes would be submitted for comment prior to the submission of the outline planning application, providing opportunity for a number of the technical matters to be resolved. The proposed technical notes will consider the following topics:  Technical Note 1: Background Traffic Growth;  Technical Note 2: Trip Distribution;  Technical Note 3: Base Transport Study;  Technical Note 4: Base Junction Models;  Technical Note 5: Trip Generation; and  Technical Note 6: Mitigation Proposals. This Technical Note, Base Junction Models (TN6) details the results of the junction assessments undertaken for the 2025 future scenarios. Junction assessments have been undertaken for 14 junctions over 11 models, using LinSig for signalised junctions, ARCADY for roundabouts, and PICADY software for priority junctions. Junction models and output files have also been made available to DfI Transport Policy. To obtain traffic flow data, classified traffic turning count surveys were all undertaken on 19th October 2016 aside from the following:  Esplanade/Kensington Place priority junction was surveyed on 30th November 2016;  Gloucester Street/Seaton Place/Patriotic Street Signalised Junction was surveyed on 7th February 2017. Signal specification sheets were provided by the Department for Infrastructure for each of the signalised junctions and used to directly inform the staging and phasing within the LinSig models. The junctions that have been tested within this note have been previously agreed with DfI Transport Policy, are detailed in Table 1 and illustrated in Figure 1.

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States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

Table 1: Summary of Junctions to be assessed

Ref: Junction Junction Model Future Model 1 Gloucester Street/Esplanade signalised junction LinSig  2 Elizabeth Place/The Parade/Elizabeth Place/Cheapside No model required - 3 Peirson Road/Victoria Avenue/Esplanade/A1 St LinSig  Aubin’s Road 4 Rouge Bouillon/Savile Street/Elizabeth Place/Parade LinSig  Road signalised junction 5 Union Street/The Parade signalised junction LinSig  6 St Aubin’s Road/A1 Roundabout ARCADY  7 St Aubin’s Road/Kensington Street/Peirson Road PICADY  junction 8 The Esplanade/Patriotic Street No model required - 9 The Parade/Gloucester Street No model required - 10 St Aubin’s Road/Westmount Road priority junction PICADY - 11 St. John's Road/West Park Avenue/Cheapside/ Old PICADY  Saint John's Road staggered priority junction 12 Esplanade/Kensington Place; LinSig  13 Gloucester Street/Seaton Place/Patriotic Place LinSig  signalised junction 14 Newgate Street/Gloucester Street priority junction PICADY  15 Lewis Street/Kensington Place PICADY  16 Lewis Street/Kensington Street PICADY 

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States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

Figure 1: Junction locations and type

1.2 Future Scenarios The following scenarios have been used to assess traffic on the local road network:  2016 Base: Includes existing trips associated with Jersey General Hospital;  2025 Do Minimum: 2025 with Jersey General Hospital;  2025 Construction Closures: 2025 with Jersey General Hospital, relocation schemes, traffic direction reversed on Lewis Street, two-way traffic on Patriotic Place and road closures on Kensington Place and Newgate Street; and  2025 Do Something: 2025 with Jersey Future Hospital proposals. Two further scenarios were used to assess the junctions during the construction phase of JFH, but were later discounted as a result of the modelling, in favour of the 2025 Construction Closures scenario. The two scenarios were;  2025 Construction MSCP: operating the Patriotic Street Multi Storey Car Park as entry only from Kensington Place with a single exit on Patriotic Street.

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States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

As part of this scenario, traffic flow on Patriotic Place was reversed, with both lanes being used to approach the junction with Gloucester Street.  2025 Construction KP2W: extending two-way operation of Kensington Place to its junction with Esplanade. This required changing the existing single lane, one-way road to a two-way road, allowing vehicles to turn onto Esplanade. Both scenarios have a lower network PRC compared to the original 2025 Construction Scenario and were therefore not progressed further.

2 Junction Assessments

2.1 Junction 1/3/8/12/13/14: Esplanade Network The Esplanade/A1 model considers several junctions as part of a network of signalised junctions. This is due to the close proximity of the junctions and their potential to impact on one another. A summary of the junctions used in future models are as follows:  Junction 1: Esplanade/Gloucester Street;  Junction 3: Peirson Road/Victoria Avenue/Esplanade/A1 St Aubin’s Road;  Junction 8*: Esplanade/Patriotic Street  Junction 12: Esplanade/Kensington Place;  Junction 13: Gloucester Street/Seaton Place/Patriotic Place; and  Junction 14: Newgate Street/Gloucester Street *A model for Junction 8 is not required but has been included within the Esplanade network to show traffic that turns left onto Patriotic Place.

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States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

Arm J4:5 - St Aulbin's Rd

J4:5/1

Arm J4:2 - St Aubin's Rd

2 J4:2/1 J4:2/2 1 Arm J4:4 - Esplanade

J4:4/2 J4:4/1 Arm J4:1 - Vicotria Ave 1

1 2 J4:3/1

J4:1/1 J4:1/2 J4:1/3

1 2 Arm J4:3 - Peirson Rd J 3

J4: Esplanade/Victoria Ave/St Aubins Rd/Peirson Rd PRC: 5.3 % Total Traffic Delay: 38.5 pcuHr I Controller: 3

Arm J6:2 - Newgate Street

Arm J4:6 - Esplanade Arm J6:1 - Gloucester Street J6:2/1 4 3 C 2 J4:6/4 1 J6: Newgate Street/Gloucester Street J4:6/3 1 PRC: 78.6 % 1 J4:6/2 Total Traffic Delay: 6.1 pcuHr J4:6/1 Arm J3:2 - Esplanade J6:1/2 Controller: 5 J3:3/1 J6:1/1 J3:2/1 2 J3:2/2 1 J3:2/3

1 J2: Esplanade/Patriotic St 2 PRC: 131.4 % 3 Total Traffic Delay: 0.9 pcuHr Arm J3:3 - Kensington Pl

B Arm J5:4 - Patriotic Place

1 2 1

J5:4/2 Arm J5:2 - Gloucester St 4 J2:1/1 J5:4/1 3 2 J3:1/4 Arm J2:2 - J2:2/1 1 J3:1/3 J2:2/2 J3:1/2 J2:2/3 J3: Esplanade/Kensington Pl J3:1/1 J5: Temp Gloucester/Seaton J5:2/3 PRC: 27.7 % 1 PRC: 95.4 % J5:2/2 Total Traffic Delay: 19.2 pcuHr 2 Arm J3:1 - Esplanade Total Traffic Delay: 6.8 pcuHr J5:2/1 Controller: 2 3 Arm J2:1 - Patriotic Street 3 Controller: 4 2 1

Arm J5:1 - Seaton Place Arm J5:3 - Seaton PlaceJ5:3/1 Arm J1:2 - Esplanade Arm J1:4 - Gloucester St 1 1 J1:2/1 J5:1/1 J1:2/2 J1:2/3 H 1 2 J1:4/3 3 J1:4/2 3 J1:4/1 2 1

Arm J1:1 - Esplanade

3 2 Arm J1:3 - Esplanade 1 J1:1/3 J1:3/1 J1:1/2 J1:3/2 J1:1/1 J1:3/3

1 2 3

J1: Esplanade/Gloucester St PRC: 16.1 % Total Traffic Delay: 31.5 pcuHr Controller: 1 Figure 2: Junction 1/3/8/12/13/14 Part of the mitigation proposals for the model network include the installation of an interim signalised junction at Patriotic Place/Seaton Place/Gloucester Street for the duration of the JFH construction phase. This intervention aims to reduce the impact of the Newgate Street closure, which will be closed to general traffic whilst construction of JFH takes place and will require Patriotic Place to become a two-way road. An improvement scheme to signalise the Newgate Street/Gloucester Street junction has been modelled for the 2025 Do Something scenario. This also includes two new pedestrian crossings and a single lane for ambulance use. Table 2 shows which junctions were assessed for each of the future scenarios; Table 2: Future Esplanade Model Scenarios

Scenario (AM & Junction Number Changes from Base Scenario/ PM) Comments 1 3 8 12 13 14 2016 Base     - - J13 and J14 modelled separately 2025 Do minimum     - - J13 and J14 modelled separately 2025 Construction      - Two-way traffic on Patriotic Place Closures Only

2025 Do Something       -

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States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

Signal timings for the future scenarios were generally matched to the base model so that analysis undertaken was consistent with the calibration undertaken as part of the base model exercise. Where mitigation was incorporated into the network model, it was often necessary to optimise signal timings where significant changes were made to junction layouts or network routes. This included junctions affected by road closures, changes in signal operation and junctions not previously signalised. Detailed results for junction arms included in the LinSig network are given between Section 2.1.1 and Section 2.1.6. Table 3 shows a summary of the junction analysis. Table 3: Results Summary for Future Esplanade Model Scenarios

Scenario (AM & PM) Junction Number (Junction PRC %) Network PRC % 1 3 8 12 13 14 2016 Base (AM) 19.8 17.5 153 68.8 53.4 - 17.5% 2016 Base (PM) 31.2 31.3 321 62.4 34.7 - 31.2% 2025 Do minimum (AM) 16.1 3.9 138 -0.1 136 - -0.1% 2025 Do minimum (PM) 14.2 -0.9 277 35.1 44.8 - -0.9% 2025 Construction Closures (AM) 6.1 12.6 144 34.6 49.7 - 6.1% 2025 Construction Closures (PM) 12.1 4.5 315 43.2 7.8 - 4.5% 2025 Do Something (AM) 16.1 5.3 131 27.7 95.4 78.6 5.3% 2025 Do Something (PM) 20.5 16.2 334 40.7 60.0 55.9 16.2%

2.1.1 Junction 1: Esplanade/Gloucester Street Analysis of future scenarios shows that the Esplanade/Gloucester Street junction is expected to operate within capacity. The 2025 Construction scenario has the lowest PRC results at 6.1% and 12.1% for AM and PM peaks respectively. Table 4: LinSig Network Results – Esplanade/Gloucester Street

Link Lane AM PM Deg Sat Mean Survey Deg Sat Mean Survey (%) Max Queue (%) Max Queue Queue Queue (pcu) (pcu) 2016 Base Junction PRC 19.8% @ 120 seconds 31.2% @ 90 seconds 75.1% 68.6% 1/1 Esplanade WB Ahead L 39.4% 8.3 4.1 60.7% 12.5 6.0 1/2 Esplanade WB Ahead A 39.1% 8.8 5.1 67.2% 13.7 7.3 1/3 Esplanade WB Ahead R 37.5% 8.4 5.8 63.4% 13.5 6.3 2/1 Esplanade EB Ahead L 66.3% 12.5 7.3 35.9% 5.0 4.7 2/2 Esplanade EB Ahead A 68.6% 13.8 6.7 49.0% 5.6 4.0

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States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

2/3 Esplanade EB Ahead R 68.6% 12.8 3.3 60.4% 5.6 2.6 4/1 Gloucester St Left 75.1% 16.0 8.4 68.6% 11.9 8.3 4/2 Gloucester St Right 36.0% 6.2 3.6 45.2% 6.7 4.8 4/3 Gloucester St Right R 36.0% 6.2 6.3 47.9% 7.2 7.2 2025 Do Minimum Junction PRC 16.1%@ 120 seconds 14.2% @ 90 seconds 77.5% 78.8% 1/1 Esplanade WB Ahead L 41.3% 8.8 - 62.3% 11.3 - 1/2 Esplanade WB Ahead A 41.3% 9.4 - 78.8% 17.8 - 1/3 Esplanade WB Ahead R 41.2% 9.4 - 76.1% 16.8 - 2/1 Esplanade EB Ahead L 70.4% 9.9 - 39.0% 2.7 - 2/2 Esplanade EB Ahead A 72.0% 16.9 - 56.0% 7.0 - 2/3 Esplanade EB Ahead R 74.5% 19.4 - 67.2% 6.6 - 4/1 Gloucester St Left 77.5% 16.9 - 73.8% 14.1 - 4/2 Gloucester St Right 31.3% 5.2 - 46.8% 6.7 - 4/3 Gloucester St Right R 53.8% 10.2 - 59.1% 10.5 - 2025 Construction Closures Junction PRC 6.1%@ 120 seconds 12.1% @ 90 seconds 84.8% 80.3% 1/1 Esplanade WB Ahead L 37.6% 7.9 - 66.4% 12.5 - 1/2 Esplanade WB Ahead A 37.5% 8.4 - 67.8% 13.8 - 1/3 Esplanade WB Ahead R 37.1% 8.2 - 67.8% 13.8 - 2/1 Esplanade EB Ahead L 69.5% 14.7 - 51.9% 5.0 - 2/2 Esplanade EB Ahead A 69.9% 13.9 - 49.9% 5.5 - 2/3 Esplanade EB Ahead R 72.2% 16.3 - 51.9% 5.7 - 4/1 Gloucester St Left 84.8% 20.5 - 80.3% 17.4 - 4/2 Gloucester St Right 42.0% 8.2 - 59.2% 12.1 - 4/3 Gloucester St Right R 49.1% 10.8 - 57.4% 11.7 - 2025 Do Something Junction PRC 16.1%@ 120 seconds 20.5%@ 90 seconds 77.5% 74.7% 1/1 Esplanade WB Ahead L 41.6% 9.0 - 71.9% 14.3 - 1/2 Esplanade WB Ahead A 42.1% 9.7 - 73.2% 15.6 - 1/3 Esplanade WB Ahead R 41.8% 9.7 - 73.2% 15.6 - 2/1 Esplanade EB Ahead L 71.1% 11.0 - 52.9% 4.5 - 2/2 Esplanade EB Ahead A 72.6% 18.4 - 52.7% 5.0 - 2/3 Esplanade EB Ahead R 72.9% 10.7 - 55.3% 5.0 - 4/1 Gloucester St Left 77.5% 18.6 - 74.7% 13.3 - 4/2 Gloucester St Right 34.8% 7.5 - 50.6% 8.1 - 4/3 Gloucester St Right R 48.8% 10.4 - 50.0% 8.1 -

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States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

2.1.2 Junction 3: Peirson Road/Victoria Avenue/Esplanade/A1 St Aubin’s Road Analysis of future scenarios shows that the Peirson Road/Victoria Avenue/Esplanade junction is expected to operate within capacity with exception of the 2025 Do Minimum scenario, where the junction is approaching capacity in both the AM and PM peaks. Capacity restriction at the junction arises from the inside ahead/left turn lane on Victoria Avenue (eastbound) as well as Esplanade (westbound) right turn lanes connecting to St Aubin’s Road and Peirson Road. Table 5: LinSig Network Results – Peirson Rd/Victoria Av/Esplanade/St Aubin’s Rd/A1

Link Lane AM PM Deg Mean Survey Deg Mean Survey Sat (%) Max ed Sat (%) Max ed Queue Queue Queue Queue (pcu) (pcu) 2016 Base Junction PRC 17.5% @ 120 seconds 31.3% @ 90 seconds 76.6% 68.6% 1/1 Victoria Ave EB Ahead L 67.5% 12.9 17.2 66.4% 7.8 11.2 1/2 Victoria Ave EB Ahead 55.5% 15.6 14.2 47.1% 6.5 7.8 1/3 Victoria Ave EB Ahead 52.7% 9.1 9.0 19.6% 4.7 5.9 2/1 St Aubin's Rd Ahead Left 46.5% 9.9 3.8 43.6% 4.7 3.6 2/2 St Aubin's Rd Ahead 56.1% 9.7 4.1 68.1% 7.8 3.5 6/1 Esplanade WB Ahead 33.4% 0.3 0.7 55.2% 8.2 0.8 6/2 Esplanade WB Ahead 33.2% 0.3 1.3 56.7% 0.8 1.7 6/3+4 Esplanade WB R: Ahead 76.6% 17.7 8.4+1.5 68.6% 6.5 8.7+2.2 2025 Do Minimum Junction PRC 3.9%@ 120 seconds -0.9% @ 90 seconds 86.6% 90.8% 1/2 + 81.0 : 86.5 : Victoria Ave EB Ahead L 19.7 - 14.7 - 1/1 81.0% 86.5% 1/3 Victoria Ave EB Ahead 75.0% 23.7 - 22.8% 3.1 - 2/1 St Aubin's Rd Ahead Left 86.6% 14.6 - 27.6% 3.7 - 2/2 St Aubin's Rd Ahead 60.4% 8.9 - 40.9% 6.2 - 6/1 Esplanade WB Ahead 36.0% 0.3 - 61.7% 8.9 - 6/2 Esplanade WB Ahead 36.1% 0.3 - 59.0% 9.9 - 79.9 : 76.9 : 6/3+4 Esplanade WB R: Ahead 18.6 - 13.0 - 79.9% 90.8% 2025 Construction Closures Junction PRC 12.6%@ 120 seconds 4.5% @ 90 seconds 79.9% 86.2%

1/2 + 79.1 : 60.8 : Victoria Ave EB Ahead L 18.9 - 7.9 - 1/1 79.1% 60.8%

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States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

1/3 Victoria Ave EB Ahead 74.1% 23.1 - 43.6% 6.7 - 2/1 St Aubin's Rd Ahead Left 79.9% 12.5 - 33.6% 4.6 - 2/2 St Aubin's Rd Ahead 63.5% 9.4 - 32.1% 4.6 - 6/1 Esplanade WB Ahead 34.3% 0.3 - 57.6% 1.2 - 6/2 Esplanade WB Ahead 36.8% 3.8 - 60.5% 1.1 - 78.0 : 75.1 : 6/3+4 Esplanade WB R: Ahead 17.5 - 7.6 - 78.0% 86.2% 2025 Do Something Junction PRC 5.3%@ 120 seconds 16.2%@ 90 seconds 85.4% 77.5%

1/2 + 85.4 : 65.5 : Victoria Ave EB Ahead L 26.9 - 8.8 - 1/1 85.4% 65.5% 1/3 Victoria Ave EB Ahead 78.4% 25.8 - 46.3% 7.1 - 2/1 St Aubin's Rd Ahead Left 67.6% 9.7 - 35.3% 4.9 - 2/2 St Aubin's Rd Ahead 78.8% 12.9 - 32.7% 4.7 - 6/1 Esplanade WB Ahead 33.6% 13.3 - 58.1% 0.8 - 6/2 Esplanade WB Ahead 37.7% 17.2 - 61.4% 0.9 -

78.0 : 74.6 : 6/3+4 Esplanade WB R: Ahead 18.3 - 6.9 - 78.0% 77.5%

2.1.3 Junction 8: Esplanade/Patriotic Street Analysis of future scenarios shows the Esplanade/Patriotic Street junction is expected to operate within capacity. High PRC results are shown across all scenarios, with low saturation percentages on each junction arm. Table 6: LinSig Network Results – Esplanade/Patriotic Street

Link Lane AM PM Deg Mean Survey Deg Mean Survey Sat (%) Max ed Sat (%) Max ed Queue Queue Queue Queue (pcu) (pcu) 2016 Base Junction PRC 153.0% @ 120 seconds 320.7% @ 90 seconds 35.6% 21.4% 2/1 Esplanade EB Ahead Left 31.5% 0.2 - 15.3% 0.1 - 2/2 Esplanade EB Ahead 35.6% 0.3 - 21.4% 0.1 - 2/3 Esplanade EB Ahead 33.5% 0.3 - 21.0% 0.1 - 2025 Do Minimum Junction PRC 138.2%@ 120 seconds 276.7% @ 90 seconds 37.8% 2/1 Esplanade EB Ahead Left 32.3% 0.2 - 16.8% 0.1 - 2/2 Esplanade EB Ahead 37.3% 0.3 - 19.9% 0.1 -

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States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

2/3 Esplanade EB Ahead 37.8% 0.3 - 23.9% 0.2 - 2025 Construction Closures Junction PRC 144.4%@ 120 seconds 315.1% @ 90 seconds 36.8% 21.7% 2/1 Esplanade EB Ahead Left 32.1% 0.2 - 14.8% 0.1 - 2/2 Esplanade EB Ahead 36.8% 0.3 - 21.7% 0.1 - 2/3 Esplanade EB Ahead 36.2% 0.3 - 20.7% 0.1 - 2025 Do Something Junction PRC 131.4%@ 120 seconds 334.3%@ 90 seconds 38.9% 20.7% 2/1 Esplanade EB Ahead Left 33.7% 0.3 - 19.5% 0.1 - 2/2 Esplanade EB Ahead 38.9% 6.1 - 20.1% 0.1 - 2/3 Esplanade EB Ahead 35.8% 0.3 - 20.7% 0.1 -

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States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

2.1.4 Junction 12: Esplanade/Kensington Place Analysis of future scenarios shows that the Esplanade/Kensington Place junction is expected to operate within capacity with exception of the 2025 Do Minimum scenario, where the junction is approaching capacity in the AM peak. Capacity restriction at the junction arises from the Esplanade (westbound) right turn lane connecting to Kensington Place, where the degree of saturation is 90.1%. Table 7: LinSig Network Results – Esplanade/Kensington Place

Link Lane AM PM Deg Mean Survey Deg Mean Survey Sat (%) Max ed Sat (%) Max ed Queue Queue Queue Queue (pcu) (pcu) 2016 Base Network PRC 30.8% @ 120 seconds 44.2% @ 90 seconds 68.8% 62.4% 1/1 Esplanade WB Ahead LL 40.6% 8.6 2.5 54.6% 6.0 2.5 1/2 Esplanade WB Ahead L 51.0% 11.0 3.5 56.1% 4.7 3.6 Esplanade WB Right : 57.2 : 1/3+4 68.8% 7.0 9.0 22.2 3.7 Ahead R 62.4% 2/1 Esplanade EB Left Ahead 35.6% 2.5 7.3 18.8% 0.9 1.9 2/2 Esplanade EB Ahead 51.5% 4.0 4.5 31.2% 3.3 1.2 2/3 Esplanade EB Ahead R 51.8% 3.0 2.7 30.4% 2.8 0.5 2025 Do Minimum Network PRC -0.1%@ 120 seconds 35.1% @ 90 seconds 90.1% 66.6% 1/1 Esplanade WB Ahead LL 37.7% 5.2 - 63.0% 13.5 - 1/2 Esplanade WB Ahead L 39.0% 8.1 - 60.3% 1.7 - Esplanade WB Right : 90.1 : 61.7 : 1/3+4 11.9 - 24.7 - Ahead R 90.1% 66.6% 2/1 Esplanade EB Left Ahead 50.6% 10.3 - 27.9% 5.2 - 2/2 Esplanade EB Ahead 51.6% 1.8 - 26.3% 4.1 - 2/3 Esplanade EB Ahead R 51.4% 1.8 - 31.6% 1.4 - 2025 Construction Closures Network PRC 34.6%@ 120 seconds 43.2% @ 90 seconds 66.9% 62.8% 1/1 Esplanade WB Ahead LL 36.2% 1.0 - 58.8% 9.9 - 1/2 Esplanade WB Ahead L 37.8% 6.8 - 60.0% 2.1 - Esplanade WB Right : 66.9 : 61.8 : 1/3+4 18.4 - 4.5 - Ahead R 66.9% 62.8% 2/1 Esplanade EB Left Ahead 49.4% 8.2 - 18.3% 0.9 - 2/2 Esplanade EB Ahead 49.9% 2.0 - 31.1% 3.3 - 2/3 Esplanade EB Ahead R 50.7% 2.3 - 31.0% 2.9 -

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2025 Do Something Network PRC 27.7%@ 120 seconds 40.7%@ 90 seconds 70.5% 64.0% 1/1 Esplanade WB Ahead LL 49.9% 8.3 - 61.2% 2.0 - 1/2 Esplanade WB Ahead L 54.0% 10.2 - 62.6% 3.2 - Esplanade WB Right : 69.4 : 64.0 : 1/3+4 8.1 - 24.7 - Ahead R 69.4% 61.2% 2/1 Esplanade EB Left Ahead 57.4% 8.0 - 19.8% 1.5 - 2/2 Esplanade EB Ahead 58.7% 7.0 - 35.0% 6.1 - 2/3 Esplanade EB Ahead R 70.5% 21.1 - 32.5% 7.0 -

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2.1.5 Junction 13: Gloucester Street/Seaton Place/Patriotic Place Analysis of future scenarios shows that the Gloucester Street/Seaton Place/Patriotic Street junction is expected to operate within capacity. High PRC results are shown across most scenarios, along with low saturation percentages. Table 8: LinSig Network Results –Gloucester Street/Seaton Place/Patriotic Place

Link Lane AM PM Deg Mean Survey Deg Mean Survey Sat (%) Max ed Sat (%) Max ed Queue Queue Queue Queue (pcu) (pcu) 2016 Base (Pedestrian signals only) 2025 Do Minimum Junction PRC 135.9%@ 120 seconds 44.8% @ 90 seconds 38.2% 62.2% 1/1 Seaton Place Left Ahead 32.7% 2.0 - 31.3% 1.6 - Gloucester Street Ahead 2/1 38.2% 3.5 - 62.2% 6.2 - Left 2/2 Gloucester Street Ahead 37.9% 3.5 - 24.5% 1.7 - Gloucester Street Ahead 2/3 38.2% 3.5 - 47.0% 3.9 - Right 2025 Construction Closures Junction PRC 49.7%@ 120 seconds 7.8% @ 90 seconds 60.1% 83.5% 1/1 Seaton Place Left Ahead 60.1% 4.8 - 75.3% 5.0 - Gloucester Street Ahead 2/1 59.5% 13.2 - 81.7% 13.6 - Left 2/2 Gloucester Street Ahead 59.6% 13.3 - 81.5% 13.6 - Gloucester Street Ahead 2/3 59.6% 13.3 - 81.0% 13.5 - Right Patriotic Place Right - - 3/1 57.6% 5.6 83.5% 9.4 Ahead 2025 Do Something Junction PRC 95.4%@ 120 seconds 60.0%@ 90 seconds 46.1% 56.3% 1/1 Seaton Place Left Ahead 44.7% 4.0 - 53.2% 4.0 - Gloucester Street Ahead 2/1 44.8% 6.7 - 56.3% 7.5 - Left 2/2 Gloucester Street Ahead 46.1% 5.2 - 52.4% 3.4 - Gloucester Street Ahead 2/3 45.3% 5.2 - 53.3% 5.0 - Right

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States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

2.1.6 Junction 14: Gloucester Street/Newgate Street Analysis of the 2025 Do Something future scenario shows that the Gloucester Street/Newgate Street junction is expected to operate within capacity. High PRC results are shown across most scenarios, along with low saturation percentages. Table 9: LinSig Network Results –Gloucester Street/Newgate Street

Link Lane AM PM Deg Mean Surveyed Deg Mean Surveyed Sat Max Queue Sat Max Queue (%) Queue (%) Queue (pcu) (pcu) 2025 Do Something Junction PRC 78.6%@ 120 seconds 55.9%@ 90 seconds 50.4 57.7 % % 1/1 Gloucester Street Ahead 50.2% 10.2 - 57.1% 10.4 - 1/2 Gloucester Street Ahead 50.4% 10.3 - 57.4% 10.5 - 2/1 Newgate Street Right 48.2% 5.1 - 57.7% 7.8 -

Results for the 2016 Base and 2025 Do Minimum scenario are given in Section 2.9. No results were obtained for the 2025 Construction scenario due to the closure on Newgate Street whilst construction work takes place at JGH.

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2.2 Junction 4: Elizabeth Place/Rouge Bouillon/Saville Street

Parade Rd/Elizabeth Pl/Saville St/Rouge Bouillon

Arm 1 - Parade Road

1 A

1 Arm 2 - Rouge Bouillon Arm 5 -

1 1

Arm 3 - Saville Street 2 Arm 6 - 1 Arm 4 - Elizabeth Place

C 1

Figure 3: Junction 4 LinSig Diagram - Base 2016 Table 10: Junction 4 LinSig Results – Base & Future Scenarios

Link Lane AM PM Deg Mean Surveyed Deg Mean Surveyed Sat Max Queue Sat Max Queue (%) Queue (%) Queue (pcu) (pcu) 2016 Base Network PRC 4.1% @ 90 seconds 0.5% @ 90 seconds 1/1 Parade Road Left Right 86.5% 7.2 9.3 75.9% 4.3 7.3 2/1 Rouge Bouillon Ahead 84.2% 7.7 9.0 73.2% 6.4 5.1 3/1 Savile Street Left 25.3% 1.2 2.0 30.9% 1.8 3.0 3/2 Savile Street Right 78.4% 5.2 5.4 89.6% 8.8 9.4 4/1 Elizabeth Place Ahead 74.9% 5.8 4.2 81.8% 7.7 5.6 2025 Do Minimum Network PRC -1.1%@ 90 seconds 0% @ 90 seconds 1/1 Parade Road Left Right 86.5% 7.2 - 75.9% 4.3 - 2/1 Rouge Bouillon Ahead 91.0% 9.9 - 75.4% 6.7 -

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3/1 Savile Street Left 25.3% 1.2 - 30.9% 1.8 - 3/2 Savile Street Right 78.4% 5.2 - 90.0% 8.9 - 4/1 Elizabeth Place Ahead 76.7% 6.1 - 86.7% 9.0 - 2025 Construction Closures Network PRC -0.7%@ 90 seconds 0% @ 90 seconds 1/1 Parade Road Left Right 86.5% 7.2 - 75.9% 4.3 - 2/1 Rouge Bouillon Ahead 90.6% 9.8 - 75.4% 6.7 - 3/1 Savile Street Left 25.3% 1.2 - 33.5% 2.0 - 3/2 Savile Street Right 78.4% 5.2 - 90.0% 8.9 - 4/1 Elizabeth Place Ahead 76.7% 6.1 - 86.4% 8.8 - 2025 Construction Closures - With Mitigation Network PRC 31.1% @ 120 seconds 25.0% @ 120 seconds 1/1 Parade Road Left Right 66.8% 6.7 67.4% 4.8 2/1 Rouge Bouillon Ahead 68.6% 7.6 62.5% 7.4 3/1 Savile Street Left 21.7% 1.4 26.8% 2.4 3/2 Savile Street Right 67.2% 5.6 72.0% 8.2 4/1 Elizabeth Place Ahead 58.1% 6.4 71.6% 9.0 2025 Do Something Network PRC -1.1%@ 90 seconds 1.4%@ 90 seconds 1/1 Parade Road Left Right 86.5% 7.2 - 75.9% 4.3 - 2/1 Rouge Bouillon Ahead 91.0% 9.9 - 75.4% 6.7 - 3/1 Savile Street Left 24.7% 1.1 - 33.5% 2.0 - 3/2 Savile Street Right 78.4% 5.2 - 88.8% 8.6 - 4/1 Elizabeth Place Ahead 76.7% 6.1 - 86.9% 9.1 - 2025 Do Something (With Mitigation) Network PRC 30.5%@ 120 seconds 24.9%@ 120 seconds 1/1 Parade Road Left Right 66.8% 6.7 - 67.4% 4.8 - 2/1 Rouge Bouillon Ahead 68.9% 7.7 - 62.5% 7.4 - 3/1 Savile Street Left 21.2% 1.4 - 26.8% 2.4 - 3/2 Savile Street Right 67.2% 5.6 - 71.0% 8.1 - 4/1 Elizabeth Place Ahead 58.1% 6.4 - 72.1% 9.1 -

The 2025 Do Minimum and 2025 Construction scenarios show a lower PRC for both AM and PM peaks with small increases in the degree of saturation on some junction arms. The impact of JFH traffic, both in the construction phase and once construction is complete is expected to be minimal at less than 1%. The potential for mitigation at this junction was considered to be very limited due to the constrained siting of the junction and as such, only minor improvements have been tested.

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The mitigation model operates on a 120 second cycle time, rather than 90 seconds and includes an additional pedestrian phase across Savile Street. Signal timings have been optimised for the PRC of the junction and as a result of the changes made, the junction has a practical reserve capacity of 30.5% and 24.9% for the AM and PM peaks respectively for the 2025 Do Something scenario, with very similar results for the 2025 Construction Scenario. Table 11: Junction 4 LinSig Results – Base & Future Scenarios Summary

Scenario Network PRC AM PM 2016 Base 4.1% 0.5% 2025 Do Minimum -1.1% 0.0% 2025 Construction Closures -0.7% 0.0% 2025 Construction Closures – With Mitigation 31.1% 25.0% 2025 Do Something -1.1% 1.4% 2025 Do Something – With Mitigation 30.5% 24.9%

2.3 Junction 5: The Parade/Union Street Base scenario testing has previously identified that this junction is already close to its theoretical capacity. Major capacity improvements have not been tested due to the constrained siting of the junction and the impact of JFH traffic is not The Parade/Union Street considered to be significant (less than 1% for both AM and PM peaks). Modelling results for future scenarios are shown in Table 12.

Arm 1 - The Parade N

Arm 5 -

Arm 4 - Arm 2 - Union Street B 1

1 2

Arm3 - The Parade S

C Figure 4: Junction 5 LinSig Diagram - Base 2016

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Table 12: Junction 5 LinSig Results – Base & Future Scenarios

Link Lane AM PM Deg Mean Survey Deg Mean Survey Sat (%) Max ed Sat (%) Max ed Queue Queue Queue Queue (pcu) (pcu) 2016 Base Network PRC -9.6% @ 70 seconds -7.5% @ 70 seconds 1/1 The Parade N Left 78.5% 6.6 6.1 65.6% 5.4 6.8 2/1 Union Street Right 98.6% 15.1 15.3 96.7% 14.8 14.0 3/1 The Parade S Ahead 33.8% 2.9 3.4 48.2% 4.1 3.6 3/2 The Parade S Right 73.1% 7.9 7.4 79.1% 8.4 6.9 2025 Do Minimum Network PRC -17.0% @ 70 seconds -10.2% @ 70 seconds 1/1 The Parade N Left 80.9% 7.0 - 71.0% 6.1 - 2/1 Union Street Right 105.3% 23.3 - 99.2% 17.1 - 3/1 The Parade S Ahead 33.8% 2.9 - 48.2% 4.1 - 3/2 The Parade S Right 73.1% 7.9 - 79.1% 8.4 - 2025 Construction Closures Network PRC -16.0% @ 70 seconds -9.9% @ 70 seconds 1/1 The Parade N Left 80.9% 7.0 - 72.3% 6.3 - 2/1 Union Street Right 104.4% 22.1 - 98.9% 16.8 - 3/1 The Parade S Ahead 33.8% 2.9 - 48.2% 4.1 - 3/2 The Parade S Right 73.1% 7.9 - 79.1% 8.4 - 2025 Construction Closures – With Mitigation Network PRC 28.6% @ 90 seconds 23.5% @ 90 seconds 1/1 The Parade N Left 53.9% 6.3 53.5% 6.4 2/1 Union Street Right 70.0% 9.4 72.9% 10.4 3/1 The Parade S Ahead 32.2% 3.6 42.9% 4.9 3/2 The Parade S Right 69.6% 9.4 70.2% 9.3 2025 Do Something Network PRC -17.6% @ 70 seconds -10.7% @ 70 seconds 1/1 The Parade N Left 81.5% 7.1 - 73.9% 6.5 - 2/1 Union Street Right 105.8% 24.1 - 99.7% 17.6 - 3/1 The Parade S Ahead 33.8% 2.9 - 48.2% 4.1 - 3/2 The Parade S Right 73.1% 7.9 - 79.1% 8.4 - 2025 Do Something – With Mitigation Network PRC 27.6% @ 90 seconds 23.0% @ 90 seconds 1/1 The Parade N Left 54.3% 6.4 52.4% 6.4

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2/1 Union Street Right 70.6% 9.5 70.7% 10.1 3/1 The Parade S Ahead 32.2% 3.6 44.6% 5.0 3/2 The Parade S Right 69.6% 9.4 73.2% 9.6

Results from future scenarios show that the junction is over capacity in both the AM and PM peak, with the longest queues on Union Street. Limitations surrounding the potential for junction improvement in this location has meant only minor mitigation measures have been proposed to help improve its operation. Mitigation for the junction includes an increase in cycle time from 70 to 90 seconds. Table 13: Junction 5 LinSig Results – Base & Future Scenarios Summary

Scenario Network PRC AM PM 2016 Base -9.6% -7.5% 2025 Do Minimum -17.0% -10.2% 2025 Construction Closures -16.0% -9.9% 2025 Construction Closures – With Mitigation 28.6% 23.5% 2025 Do Something -17.6% -10.7% 2025 Do Something – With Mitigation 27.6% 23.0%

Some improvements were seen using an increased cycle time but it should be noted that signal timings were also optimised as a result of the changes made to the signals.

2.4 Junction 6: St Aubin’s Road/A1 The St Aubin’s Road/A1 roundabout is close to capacity in the 2016 Base scenario. Results from the 2016 Base and 2025 future scenarios are given in Table 14.

Figure 5: Junction 6 ARCADY Diagram – Base 2016 (Flows shown are AM only)

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States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

Future scenarios show increased RFCs on all junction arms, particularly the A1 North and St Aubin’s Road. Delay also increases from 56 seconds (2016 Base) to 148 seconds (2025 Do Something) The impact of JFH on future traffic is greatest during the PM peak, with an average impact of 2% across the junction. Table 14: Junction 6 ARCADY Results – Base & Future Scenarios

Arm AM PM Survey Queue Delay RFC Survey Queue Delay RFC Queue (PCU) (s) Queue (PCU) (s) 2016 Base A1 North (1) 6.1 6.7 29.7 0.88 6.7 6.6 34.3 0.88 St Aubin’s Road (2) 1.1 1.0 31.1 0.52 1.3 4.0 55.7 0.82 A1 South (3) 2.0 1.7 12.0 0.64 3.0 2.5 12.6 0.72 2025 Do Minimum 2025 A1 North (1) 14.6 58.4 0.96 8.0 40.9 0.91 St Aubin’s Road (2) 1.9 55.8 0.68 7.9 98.2 0.94 A1 South (3) 1.8 12.5 0.65 3.3 15.9 0.78 2025 Construction Closures A1 North (1) 13.9 56.0 0.96 7.9 40.5 0.91 St Aubin’s Road (2) 2.1 59.0 0.70 11.5 130.7 0.99 A1 South (3) 1.8 12.5 0.65 3.2 15.5 0.77 Do Something 2025 A1 North (1) 14.8 59.0 0.97 8.1 41.3 0.91 St Aubin’s Road (2) 2.1 60.7 0.71 13.6 148.8 1.02 A1 South (3) 1.8 12.6 0.65 3.3 15.9 0.77

Table 15: Junction 6 Results – Base & Future Scenario Results Summary

Scenario Network PRC or Highest RFC AM PM 2016 Base 0.88 0.88 2025 Do Minimum 0.96 0.94 2025 Construction Closures 0.96 0.99 2025 Do Something 0.97 1.02

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States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

2.5 Junction 7: St Aubin’s Road/Kensington Street/Peirson Road

Figure 6: Junction 7a PICADY Diagram – Base 2016 (Flows shown are AM only)

Figure 7: Junction 7b PICADY Diagram – Base 2016 (Flows shown are AM only) Part 7a of the St Aubin’s Road/Peirson Road junction is below capacity for all future scenarios. The 2025 Do Minimum scenario shows a small increase in RFC but this reduces significantly in the 2025 Construction scenario, as a result of the junction redesign. The proposed junction design is shown in Appendix A. As a result of the proposed changes, traffic on Kensington Street will continue onto Peirson Road/St Aubin’s without having to give priority.

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Table 16 shows that this section of the junction benefits from reduced delay and lower RFCs as a result of the junction redesign, in both the AM and PM peak. Table 16: Junction 7a PICADY Results – Base & Future Scenarios

Arm – Spur from AM PM Kensington Street Survey Queue Delay RFC Survey Queue Delay RFC (B) Queue (PCU) (s) Queue (PCU) (s) 2016 Base 1.4 0.3 9.5 0.22 2.3 1.0 15.6 0.51 2025 Do minimum - 0.3 9.8 0.23 - 1.4 19.1 0.59 2025 Construction - 0.3 9.9 0.24 1.8 22.0 0.65 2025 Construction* - 0 6.1 0.02 0.1 6.9 0.07 2025 Do Something - 0.3 9.8 0.23 1.7 21.6 0.64 2025 Do Something* - 0 6.1 0.02 0.1 6.9 0.07 *Mitigation - Based on junction redesign

Part B of the junction shows similar RFCs for the 2025 Construction and 2025 Do Something scenarios, with and without mitigation. Both models show a significant reduction in delay, particularly for the PM peak 2025 Do Something scenario, which shows delay of 135 seconds without mitigation and 58 seconds with the proposed junction redesign. Table 17: Junction 7b PICADY Results – Base & Future Scenarios

Arm –Kensington AM PM Street (B) Survey Queue Delay RFC Survey Queue Delay RFC Queue (PCU) (s) Queue (PCU) (s) 2016 Base 4.1 0.9 16.8 0.49 4.3 3.5 43.3 0.79 2025 Do minimum 1.0 17.7 0.51 7.4 85.4 0.92 2025 Construction 1.0 17.6 0.51 9.0 98.4 0.95 2025 Construction* 1.0 11.9 0.5 8.8 68.8 0.93 2025 Do Something 1.0 17.7 0.51 13.5 134.8 1.0 2025 Do Something* 1.0 11.6 0.49 7.0 57.7 0.90 *Mitigation - Based on junction redesign.

2.6 Junction 10: St Aubin’s Road/Westmount Road Base junction analysis showed that the St Aubin’s Road/Westmount junction was operating sufficiently below its capacity and as such, no further modelling of the junction was required.

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States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

2.7 Junction 11: St Johns Road/Old St Johns Road/West Park Avenue/Cheapside

Figure 8: Junction 11a PICADY Diagram – Base 2016 (AM only) Previous work done for Transport Note 4 (TN4) identified that the priority junction between St Johns Road and West Park Avenue (Part A) was close to capacity in the AM peak. Future modelling analysis shows that this section of the junction is expected to exceed capacity in all future scenarios during the AM peak. Despite this, the impact of JFH traffic in both Construction and Do Something (post construction) scenarios is expected to be negligible at -1% and +1% respectively. Vehicles turning from St John’s Road have poor visibility and queues on this arm are expected to increase to 20PCUs along with delays of 150 seconds during future scenarios. A potential solution to this would involve reversing the direction of travel along West Park Avenue and making St John’s Road one way heading north. This would remove the conflict between vehicles turning out of St Johns Road and traffic continuing east along West Park Avenue.

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States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

Table 18: Junction 11a PICADY Results - Base & Future Scenarios

Arm – St John’s AM PM Road (B) Surve Queue Delay RFC Surve Queue Delay RFC y (PCU) (s) y (PCU) (s) Queue Queue 2016 Base 6.3- 9.7 79.1 0.94 3.3 1.7 20.1 0.63 2025 Do minimum - 21.8 150.2 1.04 1.9 21.6 0.66 2025 Construction - 21.0 145.9 1.03 - 1.8 21.4 0.65 2025 Construction* 0.0 0.0 0 0.0 0.0 0 2025 Do Something - 21.8 150.2 1.04 - 1.9 21.6 0.66 2025 Do Something* 0.0 0.0 0 0.0 0.0 0 *Based on mitigation changes

Figure 9: Junction 11b PICADY Diagram – Base 2016 (AM only) The priority junction with Cheapside is expected to operate within capacity for all future scenarios with RFCs below 0.85 however, it is important to note that there is very limited room for queuing vehicles waiting to turn onto Cheapside (labelled Arm B in Error! Reference source not found.). Traffic at this part of the junction is assumed to remain the same since the proposed mitigation that focusses on St John’s Road and West Park Avenue allows traffic to reach Cheapside, with only minor alterations to the network.

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States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

Table 19: Junction 11b PICADY Results – Base & Future Scenarios

Arm – Link (entry AM PM onto Cheapside) Survey Queue Delay RFC Survey Queue Delay RFC Queue (PCU) (s) Queue (PCU) (s) 2016 Base - 2.6 21.5 0.73 - 0.8 10.7 0.46 2025 Do minimum - 4.2 31.2 0.82 0.9 11.6 0.49 2025 Construction - 4.0 30.1 0.81 - 0.9 11.5 0.48 2025 Construction* Same as 2025 Construction 2025 Do Something - 4.1 30.5 0.81 - 0.9 11.6 0.49 2025 Do Same as 2025 Do Something Something* *Based on mitigation changes

2.8 Junction 13: Gloucester Street/Seaton Place Pedestrian Crossing

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States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

Figure 10: Junction 13 LinSig Diagram - Base 2016

Link Lane AM PM Deg Mean Survey Deg Mean Survey Sat (%) Max ed Sat (%) Max ed Queue Queue Queue Queue (pcu) (pcu) 2016 Base (Pedestrian signals only) Junction PRC 53.4% @ 120 seconds 34.7% @ 90 seconds 58.7% 66.8% 1/1 Seaton Place Left Ahead 24.2% 2.1 3.8 24.2% 1.8 4.2 Gloucester Street Ahead 2/1 58.7% 9.4 8.4 66.8% 9.4 7.3 Left 2/2 Gloucester Street Ahead 21.6% 2.4 1.7 23.9% 2.3 1.6 Gloucester Street Ahead 2/3 28.6% 3.3 3.3 35.7% 3.8 4.5 Right 2025 Do Minimum - see Section 0 2025 Construction Closures - see Section 0 2025 Do Something – see Section 0

2.9 Junction 14: Gloucester Street/Newgate Street The Base scenario for Gloucester Street/Newgate Street showed that the junction currently operates within capacity (refer to TN4). Plans to close Newgate Street during the construction phase mean that this junction has only been assessed for the Do Minimum and Do Something scenarios.

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States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

Figure 11: Junction 14 PICADY Diagram – (AM only) Table 20: Junction 14 PICADY Results – Base & Future Scenarios

Arm – Newgate AM PM Street (entry only) Surve Queue Delay RFC Survey Queue Delay RFC y (PCU) (s) Queue (PCU) (s) Queu e 2016 Base - 0.7 16.6 0.4 - 1.7 27.0 0.64 2025 Do minimum - 0.9 20.0 0.48 - 11.7 121.9 0.98 2025 Construction ------2025 Construction* Newgate Street Closed 2025 Do Something - 1.0 20.7 0.5 - 12.5 126.8 0.99 2025 Do Something* See Section 2.1.6 *Mitigation - Based on introduction of signals.

Once it is reopened, it is expected to operate close to capacity as a priority junction, with queue lengths approaching 75m (12 PCUs) in the 2025 Do Something scenario. A proposed layout for implementing signals at the junction has been provided in Appendix B. It is anticipated that installing signals at the junction will reduce queuing on Newgate Street and allow the introduction of an

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States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

additional signalised pedestrian crossing on Gloucester Street directly north of the junction.

2.10 Junction 15: Lewis Street/Kensington Place The closure of Newgate Street and Kensington Place for the construction phase of JFH will mean some traffic will need to find an alternative route, particularly vehicles accessing Patriotic Street Multi-Storey Car Park. To limit the impact of road closures on the road network, the direction of travel on Lewis Street will be reversed.

Figure 12: Lewis Street/Kensington Place PICADY Diagram – (AM only) Modelling of Lewis Street/Kensington Place shows that the junction is expected to operate within capacity for both the AM and PM peak. Results for the 2025 Construction scenario are shown in Table 21. Table 21: Lewis Street/Kensington Place PICADY Results - Future Scenarios

Arm – Lewis Street AM PM Survey Queue Delay RFC Survey Queue Delay RFC Queue (PCU) (s) Queue (PCU) (s) 2025 Construction - 0.2 9.3 0.19 - 1.4 16.6 0.58

2.11 Junction 16: Lewis Street/Kensington Street The Lewis Street/Kensington Street junction has also been assessed to check if reversing the direction of travel on Lewis Street is a feasible option during the construction phase. As part of the proposal to reverse the direction of traffic on Lewis Street, vehicles would need to give priority at the junction with Kensington Street.

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States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

Figure 13: Lewis Street/Kensington Street PICADY Diagram – (AM only) Results of the junction modelling are shown in Table 22 Table 22: Lewis Street/Kensington Street PICADY Results - Future Scenarios

Construction 2025 AM PM Stream Survey Queue Delay RFC Survey Queue Delay RFC Queue (PCU) (s) Queue (PCU) (s) Lewis Street (west) - 0.5 9.3 0.31 - 10.3 74.1 0.95 (Arm B) Lewis Street (east) 0.1 10.1 0.11 0.1 12.9 0.13 (Arm D)

Results for the junction show that the AM peak is substantially under capacity unlike the PM peak, where traffic is approaching capacity on Lewis Street (west), where there are queues in the region of 10PCUs. Despite this, it is likely that some drivers will divert via other routes, knowing that road closures are in place around JGH during construction and therefore, it is unlikely that traffic flows will be as high as seen in the model.

3 Mitigation Summary

This document outlines several mitigation measures over the duration of the JFH construction phase as well as post scheme measures designed to limit the impact of future traffic. These include;  Junction 4: Elizabeth Place/Savile Street/Rouge Bouillon/Parade Road. Increasing the cycle time from 90 to 120 seconds and introducing a new pedestrian crossing on Saville Street;  Junction 7: St Aubin’s Road/Kensington Street/Peirson Road. Redesigning the junctions between Kensington Street/Peirson Road and Peirson Road/ St Aubin’s Road. This improvement means vehicles on the Kensington Street approach no longer give way to traffic on Peirson Road;

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States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

 Junction 14: Newgate Street/Gloucester Street. Installing signals at the Newgate Street/Gloucester Street junction to reduce queue lengths on Newgate Street. Additional pedestrian crossings are also included as part of the upgrade;  Junction 11: St John’s Road/Old St John’s Road/West Park Avenue. Reversing the direction of travel along West Park Avenue and changing St John’s Road to one way only; and  Junction 5: The Parade/Union Street. Increasing the cycle time on The Parade/Union Street from 70 to 90 seconds to increase junction efficiency. Further mitigation measures have been suggested for the Construction phase alone. These specifically aim to accommodate the proposed road closures on Newgate Street and Kensington Place while JFH construction take place. These measures include;  Lewis Street. Direction of one-way traffic reversed (2025 Construction Closures and 2025 Construction MSCP); and  Junction 13: Gloucester Street/Seaton Place/Patriotic Place. Amended junction design to include fully signalised junction.

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States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

4 Future Junction Modelling Summary

Table 23: Summary of Junction Assessment Results (PRC or Highest Link RFC)

Junction Name Model 2025 Do Minimum 2025 Construction 2025 Do Something AM Peak PM Peak AM Peak PM Peak AM Peak PM Peak 1,3,8,12, Esplanade/Gloucester Street/Patriotic Street/Kensington LinSig -0.1% -0.9% 6.1% 4.5% 5.3% 16.2% 14 Place/Peirson Road 4 Rouge Bouillon/Savile Street LinSig -1.1% 0.0% -0.7% 0.0% -1.1% 1.4% 4 Rouge Bouillon/Savile Street* LinSig - - 31.1% 25.0% 30.5% 24.9% 5 Union Street/The Parade LinSig -17.0% -10.2% -16.0% -9.9% 17.6% -10.7% 5 Union Street/The Parade * LinSig - - 28.6% 23.5% 27.6% 23.0% 6 St Aubin’s Road/A1 Roundabout ARCADY 0.96 0.94 0.96 0.99 0.97 1.02 7a Peirson Road/spur from Kensington Street PICADY 0.23 0.59 0.24 0.65 0.23 0.64 7a Peirson Road/spur from Kensington Street* PICADY - - 0.02 0.07 0.02 0.07 7b St Aubin’s Road/Kensington Street PICADY 0.51 0.92 0.51 0.95 0.51 1.00 7b St Aubin’s Road/Kensington Street* PICADY - - 0.5 0.93 0.49 0.90 11a Cheapside/St. John's Road/West Park Avenue PICADY 1.04 0.66 1.03 0.65 1.04 0.66 11b Spur from St. John's Road and West Park Avenue/Cheapside PICADY 0.82 0.49 0.81 0.48 0.81 0.49 14 Newgate Street/Gloucester Street PICADY 0.48 0.98 - - 0.5 0.99 14 Newgate Street/Gloucester Street* LinSig - - - - 78.6% 55.9% 15 Lewis Street/Kensington Place PICADY - - 0.19 0.58 - - 16 Lewis Street/Kensington Street PICADY - - 0.31 0.95 - - PRC (<0%, 0%-5.0%, >5%) Highest Link RFC (<0.85, 0.86 to 0.95, >0.95) *Mitigation Schemes

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States of Jersey Jersey Future Hospital Technical Note 6: Mitigation

Appendix A St Aubin’s Road/Peirson Road/Kensington Street Improvement Scheme

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Appendix B Gloucester Street/Newgate Street Improvement Scheme

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