Abstract: Railway Intelligent Transportation System (RITS)is the inevitable development thendency of railway transportation. Many basic conditions for RITS development have come into being in internal railway. Research and application of RITS must be strengthened, in order to avoid the traditional development stage experienced by developed countries. It will help the promoting ofthe widely application of high-technology, the developing of relative industries，and the improving of personnel stuff. At the same time，the reform of railway, the conversion of management pattern and enhancement market competition will be promoted greatly. Researching on the key technologies of RITS, summarizing its general characters and constructer，especially combining the international and internal railway，the gaps are educed in this paper.

Key words: railway intelligent transportation system, key technologies, international advanced technologies, research actuality

摘要： 铁路智能运输系统(RITS)是铁路运输发展的必然趋势，RITS的发展在我国已
初步具备了条件，大力加强RITS的研发和应用，不仅能避免发达国家铁路发展的传统阶段，而且可以促进大量高新技术在铁路的应用、促进相关产业的发展和人才队伍的建设，对铁路的改革、运营模式的转变和市场竞争力的提高起到巨大的促进作用.针时铁路智能运输系统的特点及一般构成，认真研究RITS关健技术，特别是通过分类研究分析其国内外发展现状，找出我国与国外发达国家的差距，重点攻关，对于实现我国铁路信息化跨越式发展具有重要意义.

关键词: 铁路智能运输系统, 关键技术, 国外先进技术, 研究现状