法国铁路和公路在货运方面的竞争,持续了相当长的时间,迄今已达到了颇为激烈的程度。为了与公路竞争和适应货运需要,法国铁路很早就开始重视铁路驮背运输车的发展。据法国铁路有关人士分析,使用驮背运输车辆具有以下特点: ①运费低,发运速度快; ②便利货物运输,不用中间转运和倒装, The fierce competition in freight transport between the French railways and highways has taken a considerable amount of time and has so far reached a very high level. In order to compete with the road and adapt to the needs of freight, the French Railways has long begun to attach importance to the development of rail carrying vehicles. According to the analysis of the French railway authorities, the use of backpack transport vehicles has the following characteristics: ① low shipping costs and fast shipping speed; ② convenient transport of goods without intermediate transit and flip-up,