Article ID: | iaor20141750 |
Volume: | 61 |
Issue: | 1 |
Start Page Number: | 186 |
End Page Number: | 198 |
Publication Date: | Mar 2014 |
Journal: | Transportation Research Part A |
Authors: | Jou Rong-Chang, Chen Tzu-Ying |
Keywords: | transportation: road, statistics: regression |
This study established a hypothesis model based on the seemingly unrelated regression equations (SURE) model to investigate the relationship between public transportation, car, and motorcycle use in various townships in Taiwan and to analyse important factors that affect the usage of these modes. The SURE model was adopted because of the lack of a significant correlation between the dependent variables. The pairwise covariance analysis for any two of the three transportation modes revealed that the transportation modes could substitute for one another. Factors related to modal and demographic characteristics had different impacts on the usage of the three modes. The calculation of elasticity using different population densities and public transportation usage showed that when the ‘number of city bus routes’ was increased by 50% in areas with high population density and high public transportation usage, car usage decreased by 1.4%, which corresponds to 300,000 vehicles, and total CO