中文摘要：

由于计算机辅助设计在铁路公路选线设计这种多方案多目标决策工作中存在局限性．有必要在选线领域研究人工智能的应用。通过大量的文献检索，对遗传算法、知识工程和神经网络在选线领域的应用研究现状作了综述．在此基础上提出了综合利用地理信息系统、多Agent技术、工程数据库技术的知识工程路线，并阐述了该研究思路体系结构。

英文摘要：

Because the application of CAD technology in railway or highway alignment design what concerns multiobjective decision-making of many schemes has its shortcoming,it＇s necessary to introduce artificial intelligence into this field.According to a large amount of literature search,a survey is prompted concerning the application of genetic algorithm,knowledge-based engineering and neural network in railway or highway alignment design.A research scheme using AI in alignment design with its primary structure based on GIS,muhiple Agent technology and knowledge-based engineering is also presented.