Daftar Isi:
  • Increasing congestion in Indonesia in recent years is mainly caused by unsatisfactory public transport provision and uncontrolled developments. Traveler have to decide their route with the shortest time avoiding congestion and using motorcycles. In this sense, it might change vehicle composition. It was indicated previous studies in multilane highways. Therefore, traffic compositions in multilane highways can not represent overall vehicle composition of the cities and the use of vehicle registration data was considered to be better. Knowledge on vehicle composition can be utilized to change unclasiffied traffic count data into predicted classified traffic count data as in Indonesian mixed traffic, traffic flow should be converted from vehicles/ hour into passanger car units/ hour. By conducting present research, suggested values of vehicle composition in Indonesian Highway Capacity Manual (1997) can be corrected. Malaysian cities were different from Indonesian cities. It would be beneficial to conduct vehicle compositions international comparison.