Abstract: Firstly, this paper uses a sample indicating the difference of two programs that deal with the same complex curve line. Secondly , this paper analyses the reason for the difference. After which this paper makes the conclusion for the importance of using the same calculating model in the design and reconnaissance of the highway project

Key words: plan route entity, design, reconnaissance, calculating model

摘要： 平面线形的布设及计算,是公路勘测设计工作中的一个重要部分.笔者对较特殊线形在外业勘测和内业设计 过程计算结果不一致的原因进行了分析.提出了统一计算模型的观点,以减小内业处理难度.

关键词: 平面线形, 设计, 勘测, 计算模型