“不三不四” 既不是三级路也不是四级路,就是说一条公路的技术等级不完全是三级,还包含了部分四级公路的指标,这是贵州遵循实事求是、因地制宜、注重实效的原则,而采取的一种公路改造方式。他们认为在个别地形特别复杂的地段,如果一味强调技术指标,一味大挖大填,必将造成工程数量的剧增和对生态环境的破坏,特别是地质条件复杂, “Not trivial ” is neither a three-way nor a four-way, that is a technical grade of the road is not entirely three, but also contains some of the four-level highway indicators, which is to follow the truth-seeking Guizhou, according to local conditions, Pay attention to the principle of effectiveness, but to take a way of road reconstruction. They think that in areas with particularly complicated terrains, if blindly emphasizing technical indicators and digging large dams will inevitably lead to a sharp increase in the number of projects and damage to the ecological environment, especially the complex geological conditions,