自行车的环保和安全特性,是其他机动交通工具无法比拟的。英国政府最近制定了一个庞大的建筑计划,在各主要城市修建专供自行车使用的“高速公路”,最高时速可达48公里。 英国的科学家目前正在对这个计划的可行性作进一步的研究,该计划的核心是, The environmental and safety features of bicycles are unmatched by other motorized vehicles. The British government recently developed a massive construction program to build “expressways” designed for bicycles in major cities at speeds of up to 48 kilometers per hour. British scientists are currently studying the feasibility of this project for further study, the core of the plan is,