The main reason is that users of private motorized modes perceive comparatively higher utility and they do not pay for external costs such as air pollution, noise, accident and congestion.
英
美
- 產(chǎn)生此現象之重要因素之一在于私人機動(dòng)運具所產(chǎn)生之空氣污染、噪音污染、肇事與擁擠等成本未被合理反映在其應負擔之成本，以致于使用者在運具選擇時(shí)，而感受到私人運具之相對效用大于其他運輸工具。
