Roads and Highways Department (RHD) of Bangladesh uses the Highway Development and Management Model (HDM-4) to determine its Annual Maintenance andRehabilitation Needs for Periodic Maintenance Program (PMP) and to maintain its assets. Some of the HDM-4 outputs in 2005 were initially found inconsistent from field observations and video data. It was observed that dataquality and mismatch of yearly data provided wrong outputs. As a result, several HDM-4 reruns were made to obtain better results. Paved roads assetvaluation, current backlog, RHD's recent and 5-years maintenance requirement were derived in the analysis. It is recommended to analyze the database for reliability before use, to collect data on time, to change treatmentintervention criteria and to set calibration parameters of the HDM-4 model appropriately to obtain better HDM-4 outputs. Field visits are suggestedto finalize treatment selection. It was observed that maintenance overlaywould not sustain long if pavements are structurally weak, and rehabilitation design is suggested for those cases. For the covering abstract see ITRD E139491.
Samenvatting