Quantifying perceived quality of traffic service and its aggregation structure

This paper proposes a methodology for measuring the perceived quality of service (QOS) of a driver. The proposed method characterizes a driver’s perception of the quality of traffic service as based on not the macroscopic or average traffic conditions but on the microscopic traffic conditions that the driver faces. To ascertain this, two methods are developed in this study. The first one is to estimate the driver’s perceived QOS of traffic service on a point-basis that is formulated based on revealed preference data and a discrete choice model. Existence of order effect is, then, examined and the relationship between point-basis utility and point-basis perceived utility is clarified. The second method is to relate the point-basis perceived QOS with the section-basis perceived QOS. Through a data analysis, the existence of some formation structures for the QOS perception has been confirmed.