To efficiently automatically travel.SOLUTION: There is provided the travel route generation system for generating an automatic travel route by a harvester which reciprocates on a site CA where work has not been performed, along travel routes which are in parallel, by automatic travel, and harvests crops on a site CA where work has not been performed, the system comprises: a yield acquisition part for acquiring yield being yield for unit area in a field； an area acquisition part for acquiring an area of the site CA where work has not been performed； a total yield estimation part for estimating a total yield of grains predicted to be harvested on the site CA where work has not been performed, on the basis of the yield and the area； and a travel route setting part for generating a preliminary adjustment route LR where automatic travel is performed prior to reciprocation travel, so that a shape of the site CA where the work has not been performed becomes an optimal shape for reciprocation travel, on the basis of the shape of the site CA where the work has not been performed and total yield.SELECTED DRAWING: Figure 6【課題】効率的な自動走行を行うことを目的とする。【解決手段】圃場の未作業地ＣＡを、互いに並列する走行経路に沿って自動走行で往復走行しながら、未作業地ＣＡの作物を収穫する収穫機における自動走行経路を生成する走行経路生成システムであって、圃場における単位面積あたりの収量である収量率を取得する収量取得部と、未作業地ＣＡの面積を取得する面積取得部と、収量率と面積とから、未作業地ＣＡで収穫されることが予測される穀粒の総収量を推定する総収量推定部と、未作業地ＣＡの形状及び総収量に基づいて、未作業地ＣＡの形状が往復走行に最適な形状となるように、往復走行に先立って自動走行を行う予備調整経路ＬＲを生成する走行経路設定部とを備える。【選択図】図６
