开行市郊列车是我国城市化发展中城镇间客运交通的必然选择。通过对架空接触网及第三轨接触网的安全性、经济性、城市环境适应性,以及各种形式接触网适应速度水平的分析比较,结合城市现状与发展前景的关系、成熟技术与前瞻性技术的关系、减少工程投资与长远运营效益的关系,推荐市郊列车系统采用架空接触网供电系统。 Suburban train is the inevitable choice of passenger transport between urban and urban areas in our country. Through the analysis and comparison of the safety, economy, adaptability of urban environment and the adaptability speed of overhead catenary and third catenary to the catenary, the relationship between urban status quo and development prospects, mature technology and forward-looking Technology, reducing the relationship between project investment and long-term operating efficiency, it is recommended that suburban train systems adopt overhead contact network power supply system.