The Utilisation of LTPP Data in Network Management

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The Utilisation of LTPP Data in Network
Management

• NZ Transport Agency and NZIHT 9th Annual
  Conference
• IMPROVING THE ROAD NETWORK"Right Price, Right
  Way, Right Time"

Presented by Derek Roux
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Background
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Background
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Objectives of this presentation

• Increased operational use of the data
• Understanding the value and benefits of the data
• Highlighting the local use of data
• Creating awareness of network issues

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Why do we need LTPP monitoring?

• Primary
• Assist asset managers in decision making
• Improve maintenance practises
• Secondary
• Improving the way we measure and look at
  condition data
• Optimise best use of resource for road
  maintenance
• Enable experimental testing of new pavement
  technologies

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Benefits for participating councils

• Direct
• Get to better understand you network
• Localise your deterioration analyses
• What is really happening to the network over time
• Use as reference for measuring equipment
• Calibration of equipment for HSD surveys
• Indirect
• Development of New Zealand deterioration models
• Research outputs on maintenance practises
• Testing new methods and materials

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Appropriate use of data

• HSD
• Results is a network overview
• Used in maintenance planning
• Good for relative comparison between TL (within
  one survey)
• LTPP
• Benchmarking
• Calibration
• Trend analysis

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Benchmarking the network survey
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Investigating network issues

• Case Study
• Network survey results
• OGPA surfaces were not achieving expected lives
• 40 achieved lt 5yrs
• Substantiation not possible with network data
• LTPP data findings
• OGPA has reduced life with more than 4 layers

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The data visually
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The data visually
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The data visually
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The data visually
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Conclusion

• Increased data utilisation on local networks
• Identify usage opportunities
• Development of data tools
• Involvement in research and development
• If you would like to improve the asset management
  on your network, the LTPP data is available to
  help