AAR是北美铁路协会(Association ofAmerican Railroads)的缩写。其业务范围与所制订的标准与建议统辖北美三国(美国、加拿大与墨西哥);其研究结果,给国际铁路联盟(UIC)以深刻影响;我国铁路所采用的许多规范与参数,甚至一些技术发展方向的预测,也往往得益于研究他们的动向与结果。事实表明,AAR在世界铁路系统中占有重要位置,影响颇大。 AAR在世界铁路运输中所建立的威信,并不是美国政府机关赋予她的,而是她本身几十年来努力进取的结果。直到今天,她还是一个民间学术组织,不是任何一个政府部 AAR is the acronym for the Association of American Railroads. Its scope of business and the standards and recommendations set forth are governed by North America and the United States (the United States, Canada and Mexico); its findings have profound implications for the International Union of Railways (UIC); many of the norms and parameters used by China’s railways and even some technological developments The direction of the forecast, but also often benefit from the study of their trends and results. Facts have shown that AAR occupies an important position in the world railway system and has a great impact. The prestige established by AAR in world rail transport is not the result of the efforts made by the U.S. government authorities over her decades of efforts. Until today, she is still a non-governmental academic organization, not a government department