总部设在湖北省武汉市的铁道第四勘察设计院(简称铁四院),是国家大型综合性勘测设计、研究开发单位。拥有国家甲级勘察设计、环境评价、工程总包、施工监理和A级设计信誉等证书,具有对外经营权。连续在全国勘察设计综合实力百强单位中名列前茅,被湖北省认定为高新技术企业,国家 Headquartered in Wuhan City, Hubei Province, the Fourth Railway Survey and Design Institute (referred to as the iron four homes), is the national large-scale comprehensive survey design, research and development unit. With a national survey and design, environmental assessment, general contracting, construction supervision and A-class design credibility and other certificates, with the right to operate. Continuous in the national survey and design top 100 units of comprehensive strength among the best, was identified as high-tech enterprises in Hubei Province, the country