Appendix I Road Transport Assessment WINCHESTER SOUTH PROJECT Environmental Impact Statement Winchester South Project Road Transport Assessment Prepared for: Whitehaven WS Pty Ltd 16 April 2021 The Transport Planning Partnership E: [email protected] Winchester South Project Road Transport Assessment Client: Whitehaven WS Pty Ltd Version: Final Date: 16 April 2021 TTPP Reference: 19227 Quality Record Version Date Prepared by Approved by Signature Final 16/04/2021 Penny Dalton Penny Dalton Table of Contents 1 Introduction ................................................................................................................................. 1 2 Winchester South Project ........................................................................................................... 5 2.1 Project Location ............................................................................................................... 5 2.2 Project Description ........................................................................................................... 5 2.3 Road Transport Assessment Scenarios ........................................................................... 6 2.4 Project Transport Task ....................................................................................................... 7 2.4.1 Workforce Travel ....................................................................................................... 7 2.4.2 Deliveries and Visitors ............................................................................................... 9 2.4.3 Product Transport .................................................................................................... 10 2.5 Project Access Routes .................................................................................................... 11 2.6 Project Traffic Generation ............................................................................................. 11 2.6.1 Initial Construction Stage Vehicle Trips ................................................................ 11 2.6.2 Initial Coal Production Stage Vehicle Trips .......................................................... 13 2.6.3 Peak Operational Stage Vehicle Trips .................................................................. 13 3 Existing Road Transport Environment ...................................................................................... 15 3.1 Road Network ................................................................................................................. 15 3.2 Rail Network and Railway Level Crossings ................................................................... 19 3.3 Traffic Conditions on State Controlled Roads ............................................................. 21 3.3.1 Annual Average Daily Traffic Volumes ................................................................ 21 3.3.2 Traffic Composition ................................................................................................. 22 3.3.3 Historic AADT Growth ............................................................................................. 23 3.4 Project Traffic Surveys ..................................................................................................... 24 3.4.1 Traffic Survey Program ............................................................................................ 24 3.4.2 Daily Traffic Volumes .............................................................................................. 26 3.4.3 Traffic Composition ................................................................................................. 27 3.4.4 Average Weekday Peak Hour Traffic ................................................................... 28 3.4.5 Intersection Turning Movements ........................................................................... 29 3.5 Public and Active Transport Infrastructure .................................................................. 30 3.6 Road Safety ..................................................................................................................... 30 3.7 Road Network Planning ................................................................................................. 33 4 Future Transport Demands ....................................................................................................... 34 4.1 Non-Project Traffic Demand Changes ........................................................................ 34 4.1.1 Existing Average Daily Traffic on Project Routes ................................................. 34 19227-R01V16-210416-Winchester South Project - Road Transport Assessment i 4.1.2 Planned Developments ......................................................................................... 35 4.1.3 Background Growth ............................................................................................... 37 4.1.4 Total Future Base Traffic ......................................................................................... 38 4.2 Project Traffic Demand Changes ................................................................................. 40 4.2.1 Initial Construction Stage ....................................................................................... 40 4.2.2 Peak Construction and Initial Coal Production Stage ....................................... 42 4.2.3 Peak Operational Stage ........................................................................................ 42 5 Impact Assessment and Mitigation ........................................................................................ 45 5.1 Access and Frontage..................................................................................................... 45 5.1.1 Turn Warrant Assessments of Access Intersections ............................................. 45 5.1.2 Intersection Operation Assessments of Access Intersections ............................ 49 5.1.3 Sight Distances at Access Intersections ............................................................... 50 5.1.4 Winchester Access Road ....................................................................................... 50 5.2 Intersection Delay ........................................................................................................... 51 5.3 Road Link Capacity ........................................................................................................ 57 5.4 Road Safety ..................................................................................................................... 62 5.5 Pavement ........................................................................................................................ 76 5.5.1 Project Standard Axle Repetitions ........................................................................ 76 5.5.2 State Controlled Roads .......................................................................................... 78 5.5.3 Local Roads ............................................................................................................. 80 5.6 Railway Level Crossings ................................................................................................. 81 5.6.1 Project Rail Traffic .................................................................................................... 81 5.6.2 Project Road Traffic ................................................................................................ 82 5.7 Other Considerations ..................................................................................................... 84 5.8 Alternative Access Option ............................................................................................ 85 6 Summary and Conclusions ...................................................................................................... 86 6.1 Summary .......................................................................................................................... 86 6.2 Conclusions ..................................................................................................................... 89 19227-R01V16-210416-Winchester South Project - Road Transport Assessment ii List of Tables Table 1.1: Winchester South Project Road Transport Terms of Reference Reconciliation ........... 4 Table 2.1: Project Workforce Arrivals and Departures (percent of workforce) ............................. 8 Table 2.2: Project Workforce Residential Locations (percent of workforce) ................................. 8 Table 2.3: Daily Project Delivery and Visitor Vehicles ..................................................................... 10 Table 2.4: Initial Construction Trip Generation – Months 1 to 6 ...................................................... 12 Table 2.5: Initial Construction Trip Generation – Months 7 to 12 .................................................... 12 Table 2.6: Initial Operational Stage Trip Generation ....................................................................... 13 Table 2.7: Peak Operational Stage Trip Generation ....................................................................... 13 Table 3.1: Annual Average Daily Traffic on Peak Downs Highway in 2018 (vehicles per day) . 21 Table 3.2: Heavy Vehicles on Peak Downs Highway in 2018 (heavy vehicles per day) ............ 22 Table 3.3: Standard Axle Repetitions on Peak Downs Highway in 2018 ....................................... 23 Table 3.4: Average Historic AADT Growth Rates on Peak Downs Highway to 2018 (percent)