Its price control measures have been particularly notable: Since 1975 Singapore has used a system of "area passes" and a "traffic tax" to reduce the number of cars on the road during peak hours.
尤其在「價格管理」上，由一九七五年開始實施「地區通行證」制度以來，尖峰時段進入市區得繳「擁擠稅」。