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石太客运专线是我国铁路快速客运网的骨架之一，亦是铁路网“八纵八横”主通道的重要组成部分。本文通过对石太客运通道旅客进行大量问卷调查的基础上，根据通道的实际情况，引入了旅客交通方式选择行为的效用函数，对传统的Logit模型进行改进，构建了石太客运通道中客运专线和高速公路的竞争模型，对通道两种最主要交通方式的市场竞争能力进行分析。最后，以高速公路旅行速度和票价为主要扰动变量，分析高速公路服务水平变化，对石太客运专线竞争能力的影响。结论对提高石太客运专线运营管理水平，合理制定运输组织方案，具有重要的参考价值。

The Competition Research about Shijiazhuang-Taiyuan Passenger Dedicated Line

Shijiazhuang- Taiyuan passenger dedicated line is important framework of high speed railways net, and is also importance passenger transportation passage in our country. On the basis of a large amount of questionnaire survey, This paper introduces utility function about choosing behavior of passenger, and has a improve for the traditional Logit model, through constructing a highway and passenger dedicated line competition model, this paper analysis the competition of Shijiazhuang - Taiyuan passenger dedicated line. Regarding speed and fare as the main perturbation variable, this paper do a sensitivity analysis about the competition of Shijiazhuang - Taiyuan passenger dedicated line. The conclusion has important reference value to promote management level and make transport scheme of Shijiazhuang - Taiyuan passenger dedicated line.