01662959

Component

The Delaware Department of Transportation (DelDOT) collects 3D pavement condition data with a laser crack measurement system (LCMS) on the State’s roadway network. Pavement condition data are collected for two primary purposes: to characterize and quantify pavement distress for development of maintenance and repair (M&R) recommendations; and to develop overall pavement condition (OPC) values for reporting to State stakeholders. Transitioning to high-speed data collection resulted in OPC values not following expected trends when compared to historic data sets. As such, DelDOT required the project team to identify and mitigate differences between field-based distress measurements, LCMS-based distress measurements, and the resulting treatment recommendations originating from the Department’s pavement management system (PMS). This paper documents the project team’s approach to performing a distress calibration involving data processing and calibration iterations to narrow discrepancies between LCMS-based pavement distress data and network-level treatment selections. The project team selected calibration sites, collected baseline distress measurements, reconciled differences in manual and automated data collection processes, and executed adjustments to PMS index models. In addition, the project team adjusted data processes within the PMS to improve M&R treatment selections and index calculations. Although the calibration effort did not result in complete agreement between field and automated data, the iterations closed many of the data gaps. High-speed collection technologies in network-level pavement management is promising, and DelDOT anticipates using these results to provide consistent calibration and collection policies to vendors and consultants in the future.

This paper was sponsored by TRB committee AFD20 Standing Committee on Pavement Condition Evaluation.

18-05347

English

16p

2018

Transportation Research Board 97th Annual Meeting

Digital/other

Figures; Photos; References; Tables

Calibration; Condition surveys; Information processing; Lasers; Pavement distress; Pavement management systems

Delaware Department of Transportation

High speed data collection

Highways; Pavements

Transportation Research Board Annual Meeting 2018 Paper #18-05347

TRIS, TRB, ATRI

Jan 8 2018 11:21AM