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前言日本大部分地区处于亚热带、温带,部分地区接近寒带,与我国东部沿海地区气候条件相近。日本的现代工业发展较欧美工业发达国家为晚,因而公路的发展也较晚。公路技术多从欧美引进,目前仍十分注意吸收欧美新技术。同时,也很注意积累自己的经验,根据本国的气象、土质和交通条件不断改进和完善自己的设计、施工方法,并将这些经验
Foreword Most parts of Japan are in the subtropical and temperate zone and close to the frigid zone in some areas, similar to the climatic conditions in the eastern coastal areas of our country. The development of Japan’s modern industry is later than the developed countries in Europe and the United States, and the development of the highway is also late. Road technology and more from Europe and the United States to introduce, is still very absorbed in Europe and the United States absorb new technologies. At the same time, we also pay great attention to accumulating our own experience, continuously improving and perfecting our own design and construction methods according to the local meteorological conditions, soil quality and traffic conditions, and combining these experiences