| Title | Preliminary Study of Motorcycle Ownership Duration and Its Determinant Factors |
| Dept | Transportation Technology and Information Division |
| Year | 2004 |
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| Summary | Published in November 2004 IOT SERIAL NO. 93-106-3264, 65 pp. This study was an integration of the sampled data in 2000, surveyed by the Statistic Department of Ministry of Transportation and Communications, and the registered motorcycle information of these sampled data recorded in Taiwan’s Vehicle Registration System (VRS). The complete ownership duration of the sampled motorcycle owners could be obtained according to the duration termination, which was identified by either a “transferring” (i.e. a motorcycle owner transfers his/her motorcycle to another owner and changes the registration in the VRS) or “disposal” (i.e. a motorcycle owner ends his/her registration on the motorcycles in the VRS and hence the motorcycle cannot be used) event. A big portion of the censored data, which did not show any event occurrences during our observation spell, was generated as well. By applying the nonparametric survival analysis, more specifically the Kaplan-Meier method, we could estimate the population parameter of the distribution of motorcycle ownership duration. The results revealed that the average holding duration was 8.75 years without taking the censored data into consideration. However, after the inclusion of the censored data, the average holding duration increased to 21.19 years. By means of deleting some of the unreasonable censored data, the average holding duration was reduced to 13.87 years. Some factors, such as the displacement of the motorcycles, the used/new motorcycles, the registration area of the motorcycles, the occupation of the main user, and the main purpose of motorcycle usage, had significant contribution to the ownership duration. |
| Post date | 2005/08/15 |
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