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There are many projects under way at present in the United Kingdom and further field to up-date out-dated technology in the field of signaling and control systems, track geometry, rolling stock and so on. In the wider context, the demand to reduce the harmful environmental effects of private vehicle use is leading to demands for a "modal shift" to public transportation, and we are seeing increasing numbers of schemes being drawn up for light rail systems, tramways, guided buses and metros.
现在在英国和其他国家就有很多项目正在实施，在信号和控制系统、铁轨几何、铁路车辆等方面更新换代。从更广泛的意义上说，在减少对环境有害的私家汽车的使用的呼声下，人们要求改乘公车。我们看到越来越多的轻轨、有轨电车、导向公车和地铁项目正在筹划之中。
