中文摘要：

根据经济最优化的随机最优理论，选取普雷斯科特范式分析了保证区域与其交通协同发展的最适投资配置问题，从中得出调谐区域与其交通协同发展的相机投资模型，应用此模型和江苏省的统计资料作数值实验，算出的数值可较好地分析江苏与其交通的发展状况，实验的数值对江苏如何最优配置全社会投资于交通和非交通行业具有实际意义；最后，提出了一些有利于改善江苏交通发展的政策建议。

英文摘要：

Bases on the stochastic models of economic optimization, this paper adopts Prescott＇s paradigm to analyze the problem of optimal allocation of investment for the co-development of a region and its transportation, and develops a stochastic optimal investment model for the coordinated development. Furthermore, it derives an Euler equation for the optimum allocation, performs a numerical experiment based on the proposed model with the statistical data of Jiangsu province. The numerical results show that Jiangsu＇ s development is good. The results are helpful for Jiangsu to allocate optimally its total investment in transport and other areas. The detailed suggestions for improving development of Jiangsu＇s transportation are presented as well.