Pavement Health Track Remaining Service Life (RSL) Forecasting Models, Technical Information
Procedure for Computing Pavement RSL
The specific steps that the PHT Tool conducts to determine RSL for a given pavement section are summarized below:
- Select analysis type and parameters
- Analysis type:
- Minimum RSL
- Weighted average
- Analysis parameters:
- Assign weighting factors to each distress/IRI to be used to determine overall RSL.
- Extract from the Highway Performance Monitoring System (HPMS) program and default databases all relevant data for the given pavement section.
- Determine current age and condition (distress/IRI).
- Use relevant pavement condition (distress/IRI) models to forecast future pavement condition (distress/IRI). The predicted future distress/IRI is adjusted using actual distress/IRI data if available in HPMS. This ensures that current pavement condition is projected into the future, minimizing potential errors in future condition predictions.
- Determine pavement age at which each individual distress/IRI threshold value is attained.
- Estimate RSL for each individual performance measure (distress/IRI) of interest.
- Determine overall pavement section RSL (note that computed RSL cannot be greater than the maximum pavement service life)
- Minimum RSL
- Weighted value.
- Generate reports and graphs as needed
- GIS plots.