只要保留美国铁路客运对其铁路的使用权，他们可以停运某趟旅客列车和其他支线列车，允许将亏损的线路卖给新成立的短程铁路运输公司。
They could close passenger and branch lines, as long as they preserved access for Amtrak services. They were allowed to sell lossmaking lines to new short-haul railroads.
线路：达成929号公交支线，从苹果园地铁站到双唐建。
Directions: Take bus No. 929 branch line from Pingguoyuan subway station to Shuang Tang Jian.
智能交通系统(its)，因其高昂的费用无法在我国大中城市的支线路口和小城镇中推广使用。
The intelligent transportation system (its), can not use in lateral street in big city and small town in our country, for its huge invest.
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