Based on studies of the literatures on potential model and transportation accessibility, this paper has made some improvements on the potential model. A new applicable method has been put forward and applied in transportation accessibility research.

• 本文考察了势能模型和交通可达性的研究文献,对势能模型进行了一些改进,提出了势能模型的一种新的应用方法,将它应用到城市交通可达性的研究中来。