Studies on the Conservation Planning of Roadside Landscape Seen from the Road. M. Yui. Faculty of Horticulture, Chiba University, Matsudo, Japan. Tech. Bull. Fac. Hort. Chiba Univ., No.25: 39-48, 1977. Roadside landscape must be conserved in order to enhance the quality of traffic safety and amenity. A view from the road has its own specific character as one is driving down, and therefore I think it necessary to take the character into the planning of conserving roadside landscape. This study was examined by two methods based on this idea. The first method is the analysis of relationship between the driver and roadside landscape. In this analysis, focusing distance, angle of vision, distances between the visual point and the landscape such as short-distance landscape and medium-distance landscape, which have been reported in the fields of Landscape Planning and Human factor Engineering, are used. Roadside landscape is classified into three zones for landscape management by this first method. The second method is the survey of the condition of roadside landscape composition and the assessment of the data obtained by the survey. The results show the visual value of roadside landscape. In the last step, both results by the first and second methods will be synthesized, and from the final conclusion the places which we need to conserve will be pointed out. In order to apply this method, the case study was taken between Otsuki and Katsunuma on the Chuo Expressway, which is one of the typical roads in Japan. Conservation planning technique of roadside landscape is specified in this paper.