In theory, once mass-transit trains, the Taiwan High-Speed Rail, and the national railway system provide sufficient coverage, and there is a convenient system of bus connections and transfers, introducing economic incentives--such as increases in parking fees, levying charges for passenger cars entering urban areas during morning rush hours, and add-on taxes for fuel--should easily persuade drivers and motorcycle riders to use mass transit instead.
理論上，當捷運、高鐵、台鐵等軌道運輸普級，公車接駁及轉乘設施又便利後，再推出經濟誘因，比如提高汽機車停車收費、上班時間進城收取小客車通行費、燃料稅隨油徵收等手段，就容易引導開車、騎車民眾改搭大眾運輸工具。