Network
- Publication no: AP-R454-14
- ISBN: 978-1-925037-56-2
- Published: 18 March 2014
- PDF (free) Download
Signalised interchanges and ramp metering are major components of the interface between the arterial road system and the motorway system. The control systems of motorways and arterials are often treated as separate control components, which can introduce inefficient operations on both systems.
This project involved a survey of problematic interface sites throughout Australia and New Zealand. Four specific types of interfaces were studied: arterial roads adjoining motorway on-ramps; motorway off-ramps onto arterial roads; motorway-to-motorway interchanges; and motorways terminating at arterial roads.
This report examines four case study sites (one for each interface type) which currently or previously have exhibited inefficient traffic operations. Treatments which have been applied have been documented, along with subsequent improvements in operations resulting from these treatments.
From examination of the case study sites and discussion amongst jurisdictions, a set of principles, strategies and treatment options has been developed for each of the four interface types.
- 1. Introduction
- 1.1. Purpose
- 1.2. Context
- 1.3. Methodology
- 1.4. Overview of Report
- 2. Case Studies
- 2.1. Overview
- 2.2. Survey Sites
- 2.3. Arterial Road/On-ramp Interface
- 2.3.1. Case Study 1: Blackburn Road/Monash Freeway Westbound On-ramp (Victoria)
- 2.4. Off-ramp/Arterial Road Interface
- 2.4.1. Case Study 2: M2/Epping Road Northbound Off-ramp (New South Wales)
- 2.5. End of Motorway Interface
- 2.5.1. Case Study 3: Eastern Freeway Terminating at Hoddle Street and Wellington Street (Victoria)
- 2.6. Motorway-to-motorway Interface
- 2.6.1. Case Study 4: Roe Highway to Kwinana Freeway Southbound Ramp (Western Australia)
- 2.7. Summary of Case Studies
- 3. Principles and Strategies to Manage Interfaces
- 3.1. Overview
- 3.2. Improving Coordination of Operations at Interfaces
- 3.3. Guiding Principles for Achieving Network Optimisation
- 3.4. Management of On-ramp Interfaces
- 3.4.1. Specific Problems at Arterial Road/On-ramp Interfaces
- 3.4.2. Treatment Options for Arterial Road/On-ramp Interfaces
- 3.5. Management of Off-ramp Interfaces
- 3.5.1. Specific Problems at Off-ramp/Arterial Road Interfaces
- 3.5.2. Treatment Options for Off-ramp/Arterial Road Interfaces
- 3.6. Management of End-of-motorway Interfaces
- 3.6.1. Specific Problems at End-of-motorway Interfaces
- 3.6.2. Treatments for End-of-motorway Interfaces
- 3.7. Management of Motorway-to-motorway Interfaces
- 3.7.1. Specific Problems at Motorway-to-motorway Interfaces
- 3.7.2. Types of Motorway-to-motorway Interchanges
- 3.7.3. Ramp Metering Control Strategies
- 3.7.4. Potential for Interface Issues when Implementing Control Strategies
- 3.7.5. Principles and Strategies for Traffic Management and Safety
- 3.8. Interface Treatment Options Summary Table
- 4. Incorporating Interface Principles and Strategies into the Austroads Guide to Traffic Management
- 5. Conclusions and Recommendations
- 5.1. Conclusions
- 5.2. Recommendations
- References
- Appendix A Site Survey Form
- Appendix B Management of Roads in Australia and New Zealand
- Appendix C National Performance Indicators for Motorways and Arterial Roads
- C.1 The Need for National Performance Indicators
- C.1.1 Austroads NPIs
- C.2 Performance Indicators by Jurisdiction
- C.2.1 New South Wales
- C.2.2 Victoria
- C.2.3 Queensland
- C.2.4 Western Australia
- C.2.5 South Australia
- C.2.6 New Zealand
- Appendix D Literature Review of International Best Practices
- D.1 Ramp Signal Coordination with Arterial Signal Control
- D.1.1 US Research
- D.2 Coordinated Control Strategies
- D.2.1 US Experience
- D.2.2 European Experience
- D.2.3 Considerations for Implementation
- D.3 Off-ramps
- D.4 Motorway-to-motorway Metering