PROBLEM TO BE SOLVED: To provide a technique to operate, with high flexibility, travel routes required when a plurality of work vehicles which are different in work width cooperatively work in a work field.SOLUTION: When a standard work vehicle having a standard work width and a specific work vehicle having a specific work width work in the same work field, a large number of linear travel route element groups parallel to one anther at intervals of the standard work width are calculated. When a travel route element parallel to a travel route element traveled by a specific work vehicle 1s is selected as a travel work element to be traveled by a standard work vehicle 1m or the specific work vehicle 1s, and when a travel route element parallel to a travel route element traveled by the standard work vehicle 1m is selected as a travel route element to be traveled by the specific vehicle 1s, location coordinates of the travel route element selected is corrected on the basis of a difference between the standard work width and the specific work width.SELECTED DRAWING: Figure 30【課題】作業幅が異なる複数の作業車が作業地を協調的に作業する際に必要となる走行経路が高い融通性をもって運用される技術の提供。【解決手段】標準作業幅を有する標準作業車と特定作業幅を有する特定作業車が同じ作業地を作業する際、標準作業幅を間隔とする互いに平行な多数の線状の走行経路要素群が算出され、特定作業車１ｓによって走行済となった走行経路要素に平行な走行経路要素が、標準作業車１ｍまたは特定作業車１ｓの走行すべき走行経路要素として選択された場合、及び標準作業車１ｍによって走行済となった走行経路要素に平行な走行経路要素が、特定作業車１ｓの走行すべき走行経路要素として選択された場合、選択された走行経路要素の位置座標が標準作業幅と特定作業幅との差に基づいて修正される。【選択図】図３０
