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A QUALITY OF TRAFFIC SERVICE MEASUREMENT BASED ON PROBE DATA AND INFLUENCE OF PENETRATION RATIO IN THE ESTIMATION

This study grasps the driver’s perception on the traffic quality as the driver’s utility for traffic quality of road section, and develops a systematic method to estimate the level of quality of traffic service by formu-lating an utility function based on a set of probe data reflecting the microscopic driving environment sur-rounding the driver as an explanatory variables. Through a driving simulator experiments, the proposed index on the perceived traffic quality of the driver shows higher description ability than other indices in-cluding travel time and average speed, and pointed out that the level-of service index based on the macro traffic variables cannot capture the driver’s microscopic perception. The influence of the probe data penetration rate on the estimation accuracy is also analyzed.