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Asset Management

Cover of Benefits and Risks of Investing in Network Level Deflection Data Collection
Benefits and Risks of Investing in Network Level Deflection Data Collection
  • Publication no: AP-T217-12
  • ISBN: 978-1-921991-63-9
  • Published: 19 December 2012

This study examines the value and need for network-level pavement deflection data to support road asset management decisions. The outcomes of the study provide critical input to decisions to undertake network-level strength assessment across Australia and New Zealand. By means of a questionnaire survey directed to eight member agencies (MAs) regarding deflection data from the Danish Traffic Speed Deflectometer (TSD), the study identifies and clarifies current perceptions and realities regarding the benefits and risks of network-level deflection data including its current uses, limitations and opportunities. The survey found that there is strong support among most MAs for network-level strength assessment if a device, such as the TSD, was available provided some identified technical concerns are resolved. Most of the survey respondents favoured the use of the TSD as a screening tool to identify the weak and vulnerable pavements in the road network. The next most favoured use of the TSD was for the estimation of major rehabilitation and reconstruction budgets.

  • 1. INTRODUCTION
  • 2. QUESTIONNAIRE SURVEY AND INTERVIEWS
  • 3. RESULTS OF QUESTIONNAIRE SURVEY AND INTERVIEWS
  • 3.1.1. Need for Network Strength Assessment
  • 3.1.2. Intended Use of Network Strength Assessment
  • 3.1.3. Frequency of Network Strength Assessment
  • 3.1.4. Seasonal Variation Network Strength Assessment
  • 3.1.5. Identifying Pavement Type from Network Strength Assessment
  • 3.1.6. Consider Use of TSD for Network Strength Assessment
  • 3.2.1. Need for Network Strength Assessment
  • 3.2.2. Intended Use of Network Strength Assessment
  • 3.2.3. Frequency of Network Strength Assessment
  • 3.2.4. Seasonal Variation Network Strength Assessment
  • 3.2.5. Identifying Pavement Type from Network Strength Assessment
  • 3.2.6. Consider Use of TSD for Network Strength Assessment
  • 4. BENEFITS AND RISKS OF NETWORK DEFLECTION DATA
  • 4.3.1. Technical Risks
  • 4.3.2. Commercial Risks
  • 5. SUMMARY
  • 6. FURTHER WORK
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