社会经济影响

• Expressway is characterized by its big scale , high technique standard , and great investment , so its social and economic impact is different from the highway in impact mode , relativity , and extend . social and economic assessment is an indispensable part in post assessment for expressway , and it also is an important step of assessing comprehensively construction project
  而且由于高速公路建设具有规模大、技术标准高、投资额多的特点，所产生的社会经济影响，与一般公路相比，无论在产生方式、相关性还是显著程度等方面都更具有特殊性。