He points to Bogota, Colombia, as an example. Besides restricting the entry of cars into downtown Bogota during rush hours based on the last number on their license plates, the passage of a referendum paved the way for prohibiting all private passenger vehicles in the entire city during rush hours beginning in 2015.
他舉南美洲哥倫比亞首府波哥大為例，該市除了實施尖峰時段依照汽車牌照尾數管制進入市區外，更透過全民公投通過，2015 年起全市尖峰時段將全面禁行私人小客車。