Zhejiang　has　a　complicated　topography.　Mountains　and　hilly　lands　account　for　60.0　percent　of　the　total　land　area.　Although　highway　in　mountainous　areas　in　Zhejiang　is　low-volume,　the　level　of　economic　development　is　high.　Thus　the　traffic　demand　is　high.　Therefore,　the　department　of　communication　of　Zhejiang　Province　makes　a　special　research　on　technological　index　of　the　high-class　highway　in　Zhejiang　mountainous　areas.　The　research　analyzed　the　principle　of　index　of　highway　design.　While　meeting　the　precondition　of　ensuring　the　driving　safe　and　comfortableness,　the　optimal　land　utilization　is　to　make　socioeconomic　performance　as　effective　as　possible.　The　project　team　plans　to　advance　the　appropriate　index　of　Zhejiang　mountainous　area　low-volume　high-class　highway.　The　research　conducted　an　experiment　about　driver　workload　with　twelve　subjects　in　Guibi　Highway　that　has　low-level　technical　index.　The　experiment　uses　driver　workload　index　(Heart　Rate　Variability,　HRV)　to　evaluate　the　adaptability　of　driving.　The　results　proved　the　feasibility　of　the　technical　index.　©　2010　ASCE.