关键词: 公路, 自然区划, 原则, 方法

Abstract: Combined with the first and second level in the <>nowadays,this paper discusses the principles and the methods of executing the third level climatic zoning for highway in Sichuan and Chongqing,so that the climatic zoning for highway between provinces can provide more comprehensive fundamental data,and enhance the operative ability and the utility of the climatic zoning for highway.

Key words: highway, natural regionalism, principles, methods