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This document has been prepared to provide information in respect of the proposed Navitus Bay Wind Park and for no other purpose.

In preparation of this document Navitus Bay Development Limited and their subcontractors have made reasonable efforts to ensure that the content is accurate, up to date and complete for the purpose for which it has been prepared.

Other than any liability detailed in the contracts between the parties for this work. neither Navitus Bay Development Limited or their subcontractors shall have any liability for any loss, damage, injury, claim, expense, cost or other consequence arising as a result of use or reliance upon any information contained in or omitted from this document.

Copyright Navitus Bay Development Limited 2014

Navitus Bay Wind Park Environmental Statement

Volume C Onshore Page iii Chapter 14 Traffic and Transportation Appendix 14.1 Transport Assessment

TABLE OF CONTENTS 1. Introduction ........................................................................................... 1

1.1 Background ............................................................................................ 1

1.2 Approach ............................................................................................... 1

1.3 Report Structure ..................................................................................... 1

2. Existing Conditions .................................................................................. 2

2.1 Introduction ........................................................................................... 2

2.2 Study Area ............................................................................................. 2

2.3 Pedestrian and Cycle Networks ................................................................. 2

2.4 Public Transport ...................................................................................... 3

2.5 Highway Network .................................................................................... 4

2.6 Baseline Traffic Conditions ....................................................................... 4

2.7 Accident History ...................................................................................... 8

3. Policy Context ...................................................................................... 10

3.1 Introduction ......................................................................................... 10

3.2 National Policy ...................................................................................... 10

3.3 Local Policy .......................................................................................... 11

4. Onshore Development Proposals ............................................................. 13

4.1 Introduction ......................................................................................... 13

4.2 Onshore Development Proposals ............................................................. 13

4.3 Indicative Construction Programme ......................................................... 14

4.4 Construction Workforce ......................................................................... 14

4.5 Peak Construction Year .......................................................................... 16

5. Trip Generation .................................................................................... 17

5.1 Introduction ......................................................................................... 17

5.2 Construction Trip Generation .................................................................. 17

5.3 Operation and Maintenance Trip Generation.............................................. 24

5.4 Decommissioning Trip Generation ........................................................... 24

5.5 Summary ............................................................................................. 24

6. Trip Distribution and Assignment ............................................................. 25

6.1 Introduction ......................................................................................... 25

6.2 Landfall ................................................................................................ 25

6.3 Cable Civils and Installation .................................................................... 26

6.4 Substation ............................................................................................ 26

6.5 Peak Development Traffic Flows per Link .................................................. 26

7. Impact on Highway Network ................................................................... 30

7.1 Introduction ......................................................................................... 30

7.2 2020 Reference Case ............................................................................. 30

7.3 Seasonality ........................................................................................... 31

7.4 2020 Reference + Development Case ...................................................... 38

7.5 Effects of Increase in Traffic ................................................................... 42

7.6 Effects of Road Crossings ....................................................................... 42

8. Conclusions .......................................................................................... 45

Annex A - Hampshire and Dorset ATC Data ........................................................ 46

Annex B - Trip Generation ............................................................................1218

Annex C - Traffic Growth ..............................................................................1241

Annex D - Seasonality .................................................................................1244

Annex E -Capacity Assessment .....................................................................1252

Annex F -Figures .........................................................................................1288

Navitus Bay Wind Park Environmental Statement

Page iv Volume C Onshore Chapter 14 Traffic and Transportation Appendix 14.1 Transport Assessment

LIST OF TABLES Table 2.1 - 2013 Baseline Traffic Flows ............................................................... 5 Table 3.1 - Summary of relevant NPS advice regarding Traffic and Transportation .. 10 Table 3.2 - Summary of National Planning Policy Framework ............................... 11 Table 3.3 - Summary of Local Authorities Core Strategy ...................................... 11 Table 3.4 - Summary of Local Transport Plans ................................................... 12 Table 4.1 Illustrative Programme ................................................................... 14 Table 4.2 - Peak Workforce .............................................................................. 14 Table 4.3 - Landfall Workforce ......................................................................... 15 Table 4.4 - Substation Workforce ..................................................................... 15 Table 5.1 1km Open Trench Cable Installation Programme and Trip Generation for 1 team (two-way vehicles per day) ................................................................... 18 Table 5.2 750m Trenchless Technique Cable Installation Programme and Trip Generation for 1 team (two-way vehicles per day) .............................................. 19 Table 5.3 - Trip Generation Open trench and Trenchless Techniques Installation Scenarios ...................................................................................................... 20 Table 5.4 - Summary of Average Daily Construction Traffic in the Peak Week ........ 20 Table 5.5 - Summary of Peak Daily Cable Construction Traffic in the Peak Week (Open trench Installation) ............................................................................... 21 Table 5.6 - Summary of Peak Daily Construction Traffic in the Peak Week ............. 21 Table 5.7 HGV Arrival and Departure Profile .................................................... 22 Table 5.8 Peak Construction Day Trip Generation (two-way vehicles) ................. 23 Table 6.1 Construction Workforce Distribution ................................................. 25 Table 6.2 - Development Traffic Flows .............................................................. 27 Table 7.1 - 2020 Reference Traffic Flows (Neutral Month) .................................... 32 Table 7.2 - 2020 Reference Traffic Flows (Peak Summer Month) .......................... 35 Table 7.3 - 2020 Reference + Peak Development Traffic Flows (Peak Construction Day in Peak Summer Month) ........................................................................... 39 Table 7.4 Road Closure and Diversion - Additional Distance .............................. 42 Table 7.5 Ratio of Flow to Capacity (RFC) of Diversion Routes ........................... 43 Table 7.6 Impact of Lane Closures by Traffic Management (AM Peak Hour) ......... 43

Table 7.7 Impact of Lane Closures by Traffic Management (PM Peak Hour).......... 44

Navitus Bay Wind Park Transport Assessment

Volume C Onshore Page 1 Chapter 14 Traffic and Transportation Appendix 14.1 Transport Assessment

1. Introduction

1.1 Background

1.1.1 Navitus Bay Development Ltd (NBDL) is proposing to develop the Navitus Bay Wind Park (the Project) off the Dorset and Hampshire coasts to the west of the Isle of Wight.

1.1.2 The