Maintenance Prioritization of Isolated Rutting Based on Severity Level and Performance Deterioration

In order to satisfy the fine-tuning of rutting maintenance in the future and its project selection caused by funding shortage, considering the rutting severity level and performance deterioration, severity level indicators (isolated rutting depth, isolated rutting length) and deterioration indicators (isolated rutting depth increment, isolated rutting length increment) were proposed to represent its severity level and performance deterioration for isolated rutting on the road. Combination weighting method was applied to analyze the priority of the isolated rutting for maintenance. A case study, using 3 KM rutting data in two years show that the results automatically achieved by the proposed method is consistent with the analysis based on traffic safety and performance deterioration. Therefore, considering the rutting severity level and performance deterioration, using combination weighting method to optimize for isolated rutting maintenance is time-saving and labor-saving. The proposed method provides research foundation for highway maintenance agencies to conduct project selection under limited funding and can be used for the fine-tuning maintenance in the future.