Description

A new vehicle classification is given in this paper for expressway capacity analysis in China, because the existing vehicle classification causes some problems, such as the vehicle-types whose sizes are the same have different performance characteristics. The new vehicle classification is principally based on free-flow speed together with the characteristics of vehicle configuration and wheelbase frequency. According to this principle, dynamic cluster is used to combine the existing vehicle-types into three new vehicle-types, which are labeled passenger car, heavy vehicle, and unidentified, respectively.A new vehicle classification is given in this paper for expressway capacity analysis in China, because the existing vehicle classification causes some problems, such as the vehicle-types whose sizes are the same have different performance characteristics. The new vehicle classification is principally based on free-flow speed together with the characteristics of vehicle configuration and wheelbase frequency. According to this principle, dynamic cluster is used to combine the existing vehicle-types into three new vehicle-types, which are labeled passenger car, heavy vehicle, and unidentified, respectively.