双幅二级公路可行性的理论分析

Theoretical Analysis of Feasibility of Double Separated Sub grades 2nd—Grade Highway

对双幅二级公路进行了宏观的、具体的分析，从通行能力、投资、利润率等方面与高等级公路进行了相关比较，对双幅二级公路的可行性作出了客观评价，为今后二（三）级公路的改建、扩建提供了一些参考数据。

In this paper, macro and detail analysis is carried out. Comparison for capacity, investment,benefit etc. is taken between double separated sub grades 2nd-grade highway and expressway. Objective evaluation is given for double separated sub grades 2nd-grade highway, and certain reference figures are draw out for rebuilding and extension of 2nd-grade highway in the future.