Asset management

Cover of Traffic Speed Deflectometer: Data Analysis Approaches in Europe and USA Compared with ARRB Analysis Approach
Traffic Speed Deflectometer: Data Analysis Approaches in Europe and USA Compared with ARRB Analysis Approach
  • Publication no: AP-T280-14
  • ISBN: 978-1-925037-90-6
  • Published: 30 October 2014

This report documents discussions about international traffic speed deflectometer (TSD) data analysis and reporting held at the second Deflection and Road Traffic Speed workshop in Norway in June 2013. It also documents TSD data procurement and analysis processes from Poland that confirm the reliability of the ‘area under the curve’ method using data that was not typical of that encountered on flexible pavements in Australasia.

ARRB has implemented interim operational procedures for a second generation TSD acquired for network strength testing in Australasia. This research will help ensure the data collected for road agencies is reliable.

  • Summary
  • 1. Introduction
    • 1.1. Deflection and Road Traffic Speed (DaRTS) Workshop
      • 1.1.1. Workshop Attendance
    • 1.2. Aim of this Report
  • 2. Current TSD Practice
    • 2.1. TSD Comparison Trial in Denmark
      • 2.1.1. Soft Section
      • 2.1.2. Stiff Section
      • 2.1.3. Rainfall Test
      • 2.1.4. Conclusions
    • 2.2. SANRAL Experience
      • 2.2.1. SANRAL TSD
      • 2.2.2. Findings from Acceptance Testing
      • 2.2.3. Future Plans
    • 2.3. Federal Highway Administration (FHWA) Study – Network-level Pavement Structural Evaluation
    • 2.4. Future UK Plans
    • 2.5. Australian TSD Developments
    • 2.6. Dynamic Load Measurement Trial
    • 2.7. Interpretation of Curviameter Data in Belgium
  • 3. Data Procurement and Analysis
    • 3.1. Data Provision
      • 3.1.1. Details of TSD and FWD devices
      • 3.1.2. Data Collection Details
    • 3.2. Data Analysis
      • 3.2.1. TSD Maximum Deflection
  • 4. Results of Analysis
    • 4.1. Observations
    • 4.2. TSD and FWD Maximum (D0) Deflection Comparison
      • 4.2.1. Impact of Time and Temperature
      • 4.2.2. TSD and FWD Maximum Deflection Graphical Comparisons
    • 4.3. Outcomes
  • 5. Summary
  • References