private car ownership

基本解释

Firstly, taxes levied on the sales of private cars④ should be raised so as to restrict private car ownership rate.
第一，通过提高税费限制私家车拥有率(保有量)。
edu.sina.com.cn
As is indicated in the graph, private car ownership revealed a trend of dramatic increase for 10 years in a row while air quality showed an obviously opposite trend.
如图所示：上海私家车保有量连续10 年呈现出迅猛增长的趋势，而空气质量则显现出截然相反的态势。
9512.net
He said "Low carbon should be the goal of urbanization. While seeking development, cities should control their traffic and private car ownership and use frequency, develop rail transit."
他认为：“发展低碳城市应该是城市化的目标，城市的发展中，应当控制交通量，控制私人汽车拥有量和使用率，大力发展轨道交通；
news.dichan.sina.com.cn