Asset management

Cover of A Common Data Output Specification for Texture, Cracking, Strength and Skid Resistance
A Common Data Output Specification for Texture, Cracking, Strength and Skid Resistance
  • Publication no: AP-T290-15
  • ISBN: 978-1-925294-14-9
  • Published: 23 March 2015

The report documents the development of a harmonised approach to road condition data management by Austroads member agencies.

It outlines the results of consultation with member agencies which considered principles, methods, specifications and their application to texture, cracking, strength and skid resistance.

The report details common practices used by member agencies to collect data and identifies limitations and proposes solutions to the harmonisation of road condition data.

  • Summary
  • Contents
  • 1. Introduction
    • 1.1. Background
  • 2. Harmonisation Method
    • 2.1. Harmonisation Approach
    • 2.2. Dataset
      • 2.2.1. Inventory
      • 2.2.2. Road Condition
    • 2.3. Generic Harmonisation Method
    • 2.4. Roughness Data Output Specifications
    • 2.5. Rutting Data Output Specifications
    • 2.6. Guiding Principles
    • 2.7. Harmonisation Process
    • 2.8. Data Collection and Processing Issues
    • 2.9. Harmonisation Method
  • 3. Scope of Report
    • 3.1. Purpose
      • 3.1.1. What is not Included
      • 3.1.2. Local Roads
  • 4. Workshop
    • 4.1. Participants
  • 5. Data Output Specifications
    • 5.1. Data Output Specifications
    • 5.2. Data Output Specification Feasibility
  • 6. Texture
    • 6.1. Collection and Reporting Methods
      • 6.1.1. Volumetric Method
      • 6.1.2. Surface Profile Method (Laser Profilometers)
    • 6.2. Data Output Issues and Equipment Validation
    • 6.3. Texture Depth Harmonisation Approach
    • 6.4. Texture Data Output Specifications
    • 6.5. Current Practice – Texture Output
      • 6.5.1. Local Government Assessment
      • 6.5.2. Texture Harmonisation Assessment
  • 7. Cracking
    • 7.1. Collection and Reporting Methods
      • 7.1.1. Automated Crack Detection Methods
      • 7.1.2. Manual Post-processing of Digital Images
      • 7.1.3. Manual Visual Rating (ROCOND 90)
    • 7.2. Current Practice
    • 7.3. Data Output Issues
      • 7.3.1. Type
      • 7.3.2. Severity
      • 7.3.3. Extent
    • 7.4. Harmonisation of Cracking Output Data
      • 7.4.1. Reporting Interval
      • 7.4.2. Crack Type Output Specification
      • 7.4.3. Crack Severity Output Specification
      • 7.4.4. Crack Extent Output Specification
    • 7.5. Proposed Harmonisation Approach
    • 7.6. Cracking Data Reporting
    • 7.7. Current Practice – Cracking Output
      • 7.7.1. Local Government Assessment
      • 7.7.2. Cracking Harmonisation Assessment
  • 8. Strength
    • 8.1. Collection and Reporting Methods
      • 8.1.1. Benkelman Beam (BB)
      • 8.1.2. Deflectograph (DFG)
      • 8.1.3. Falling Weight Deflectometer (FWD)
      • 8.1.4. Traffic Speed Deflectometer (TSD)
    • 8.2. Strength Data Harmonisation
      • 8.2.1. Deflection Data Adjustment
      • 8.2.2. Correlation between Deflection Devices
      • 8.2.3. Measurement Offsets
      • 8.2.4. Reporting Intervals and Values
      • 8.2.5. Harmonisation Approach
    • 8.3. Strength Data Output Specifications
    • 8.4. Current Practice – Strength Output
      • 8.4.1. Local Government Assessment
      • 8.4.2. Strength Harmonisation Assessment
  • 9. Skid Resistance
    • 9.1. Components of Skid Resistance
      • 9.1.1. Adhesion
      • 9.1.2. Hysteresis
      • 9.1.3. Seasonal Variation
      • 9.1.4. Microtexture
      • 9.1.5. Macrotexture
      • 9.1.6. Aquaplaning
      • 9.1.7. Polishing and Equilibrium Stages
    • 9.2. Collection and Reporting Methods
      • 9.2.1. Measurement of Skid Resistance
      • 9.2.2. Skid Resistance Measurement Devices
      • 9.2.3. Portable Pendulum Tester
      • 9.2.4. Grip Tester
      • 9.2.5. ROAR
      • 9.2.6. SCRIM
    • 9.3. Current Practice
    • 9.4. Harmonisation of Skid Resistance
      • 9.4.1. Lack of Correlation between Different Devices
      • 9.4.2. Complexity of Factors Contributing to Crashes
      • 9.4.3. Differences between Regions
      • 9.4.4. Harmonisation Approach
    • 9.5. Standardisation of Skid Resistance Measurement
      • 9.5.1. Adopt Identical Data-processing and Reporting Methods for each Device Used
      • 9.5.2. Regular Correlation Exercises of Same Device Types Used by States
      • 9.5.3. Management of Seasonal Variations
      • 9.5.4. Management of Regional Variations
      • 9.5.5. Selection and Trial of Standard Device(s) for Skid Resistance Measurement
      • 9.5.6. Deployment of Standard Device in all Jurisdictions
    • 9.6. Skid Resistance Data Output Specifications
    • 9.7. Current Practice – Skid Resistance Output
    • 9.8. Skid Resistance Harmonisation Assessment
  • 10. Gap Analysis
    • 10.1. Harmonisation Assessment and Classification
    • 10.2. Summary of Gap Analysis
      • 10.2.1. Lane of Collection
  • 11. Conclusions and Outcomes
  • References