It is one foundational work of large - scale construction and enormous investment . the departments of the highway design must be required to make decision according to the indexes , such as rational highway capacity , level of service and road alignments , etc . if not , the huge wasting and back - end ecocatastrophe will be brought 这是一项建设规模宏大、投资规模巨大的基础工程,要求各级部门在公路设计时,必须依据合理的公路通行能力、服务水平、道路线形等指标来确定,防止工程投资的巨额浪费和后期的生态灾难。