引言随着人们生活水平的提高,汽车进入了千家万户。尤其是近年来,发展更为迅速。2007年中国汽车产销分别为888.24万辆和879.15万辆,其中乘用车总销量超过了629.75万辆,仅2015年1月就销售了231.96万辆。交通拥堵、汽车尾气、停车难成了大城市的痛。汽车在通过停车场出入口和收费公路卡口时,传 Introduction As people’s living standards improve, the car has entered millions of households. Especially in recent years, the development is even faster. In 2007, the production and sales of automobiles in China were 8,882,400 and 8,791,500 respectively, of which the total sales of passenger cars exceeded 62,975 and the sales volume was 2,199,600 in January 2015 alone. Traffic congestion, car exhaust, parking has become a big city pain. Passing car parking entrances and toll road bayonet, pass