Freight

Cover of Pavement Wear Assessment Method for PBS Vehicles
Pavement Wear Assessment Method for PBS Vehicles
  • Publication no: AP-R372-11
  • ISBN: 978-1-921709-58-6
  • Published: 24 March 2011

The National Transport Commission (NTC) and Austroads are developing Performance Based Standards (PBS) which will augment prescriptive regulations for heavy vehicle mass, dimensions and configuration.

Austroads and NTC commissioned ARRB Group to progress a transparent national Pavement Wear Assessment Method (PWAM) that will improve road freight productivity by providing more certain access and limit the stress on the pavement layers below the surface of the road for use with the Pavement Vertical Loading Standard (PVLS).

  • 1. INTRODUCTION
    • 1.1. Definition of Terms
  • 2. DETERMINING HEAVY VEHICLE ROAD WEAR
    • 2.1. Load Associated Wear Types
    • 2.2. Wear of Flexible Pavements
      • 2.2.1. Load Damage Exponents
      • 2.2.2. Standard Loads
    • 2.3. Wear of Rigid Pavements
    • 2.4. The ESA Index of Road Wear for a Single Load Repetition
  • 3. POTENTIAL WEAR INCREASES DUE TO PBS VEHICLES
    • 3.1. 2007 Interim Pavement Vertical Loading Standard
    • 3.2. Wear Increases from Changes in Axle Types
    • 3.3. Wear Increases due to use of Belly Axles and Widespread Axles
    • 3.4. Wear Increases from Increases in Gross Mass
    • 3.5. Increased Vehicle Gross Mass from Increased Vehicle Length
  • 4. WEAR ASSESSMENT PROCEDURE
    • 4.1. Introduction
    • 4.2. Estimating Wear of Existing Vehicle Fleet Taking Account of Vehicle Usage
      • 4.2.1. Introduction
      • 4.2.2. Calculation of Vehicle ESA
      • 4.2.3. Variation in ESA of Current Freight Fleet with Gross Mass
      • 4.2.4. Working Group Review
    • 4.3. Options for ESA Limits
      • 4.3.1. Introduction
      • 4.3.2. Options Considered
      • 4.3.3. Revised Performance Relationship – Green Line ESA Limits
    • 4.4. Vehicles with Road Friendly Suspensions
    • 4.5. Vehicles Operating under Concessional Mass Limits
    • 4.6. Adjustment for Payload
    • 4.7. Dynamic Loading
    • 4.8. Proposed Pavement Wear Assessment Method (PWAM)
  • 5. IMPACTS OF ESA REQUIREMENT ON AXLE LOADS
    • 5.1. Impact on Existing Vehicle Types
    • 5.2. Impact on Emerging Vehicle Types
    • 5.3. Evaluation of Previously Approved PBS Vehicles
  • 6. CONSULTATION WITH GOVERNMENTS AND INDUSTRY
    • 6.1. PBS Review Panel
    • 6.2. Government/Industry Workshop
    • 6.3. Meeting the Guiding Principles
    • 6.4. Addressing VicRoads Concerns
    • 6.5. Revising Prescriptive Axle Group Loads
  • 7. ASSESSMENT CALCULATOR
  • 8. CONCLUSIONS
  • REFERENCES
  • APPENDIX A PAVEMENT VERTICAL LOADING STANDARD (INTERIM STANDARD)
  • APPENDIX B STANDARD LOADS FOR AXLE GROUPS WITH SINGLE TYRES
  • APPENDIX C TARE MASSES OF EXISTING AND EMERGING VEHICLES
  • APPENDIX D STATE AND TERRITORY ESA-GMRELATIONSHIPS
  • APPENDIX E PROPOSED PAVEMENT VERTICAL LOADING INTERIM STANDARD
  • APPENDIX F INITIAL COMMENTS OF PBS REVIEW PANEL MEMBERS AND WORKING GROUP RESPONSE
  • APPENDIX G PROJECT STEERING COMMITTEE AND WORKING GROUP MEMBERS