A Systems Approach to Managing Skid Deficient Sites on a Road Network Glenn Foster – Transfield Services Ltd Richard Parsons – Transfield Services Ltd Dr Fritz Jooste – Juno Services Ltd

PSMC006 Network

Background – PSMC001  PSMC006  Originally contracted to only deal with skid deficient sites with absolute response times  Drove reactive ad-hoc behaviour  NZTA T10:2002 Introduced allowing a proactive holistic asset management approach

Holistic Approach – Multiple Data Sets

Traditional Field Inspections

Result – Late Seals

Trigger For Change

T-SKAN (Transfield Skid Analyser) Process Training of Inspectors Field Inspections Post Processing

Training of Inspectors

Field Inspection Training of Inspectors Field Inspections Post Processing

Field Inspection

SCRIM™ history shown in background Lane plot shows location of Skid Deficient sites SCRIM™ data history and details of selected site Forward Works Programme and surfacing history for treatment length Details of selected crash (from CAS) Symbols representing location and severity of crash history Out-of-Context curve data (shown when curve selected)

Guided Site Inspection Site Field Observations Proposed Remedial Works with Reasons Cost Estimate of Remedial Works

Post Processing Training of Inspectors Field Inspections Post Processing

Action Plan - Export

Compliance Reporting

NZTA T/ – going forward “Paper Trail” – User/Date Logging of field considerations for IL Reviews Work Priority

T-SKAN Conclusion  Significant time saving in data analysis – both in field and office  Quick programming of works for immediate implementation  Reproducible approach to dealing with skid deficiency throughout network  Transparency of process to the Client