In addition, it is desired to reduce the workload in the preparatory work which is required prior to the execution of the automatic travel control, as well as the work running in the field.The parent work vehicle is constructed so as to perform an on-the-spot work in a field by a parent work car and a child working car which is associated with a parent work vehicle, and the parent work vehicle runs as follows to the target route setting part 18 for setting a target travel route in the field of the own vehicle and the child work vehicle, and running along the target traveling route A traveling control section 17 for controlling a state, and a parental communication section 21 capable of distinguishing the partner between the child work vehicle and the radio communication system capable of transmitting and receiving information for work travel, and the child work vehicle with the parent side communication sectionThere is provided a child side communication section 31 which is capable of discriminating the other party and capable of transmitting and receiving information for work travel, and a travel control section 17 for controlling the running state so as to travel along a target travel route transmitted from the parent side communication section 21.Diagram【課題】圃場で作業走行するときだけでなく、自動走行制御を実行するのに先立って必要となる準備作業においても、作業負担を軽減できるようにすることが望まれていた。【解決手段】親作業車と、親作業車と併走する子作業車とによって、圃場内において対地作業を行うように構成され、親作業車は、自車及び子作業車夫々の圃場内での目標走行経路を設定する目標経路設定部18と、目標走行経路に沿って走行するように走行状態を制御する走行制御部17と、子作業車との間で相手を識別可能に且つ作業走行用情報を送受信可能に無線接続される親側通信部21とを備え、子作業車は、親側通信部21との間で相手を識別可能に且つ作業走行用情報を送受信可能に無線接続される子側通信部31と、親側通信部21から送信される目標走行経路に沿って走行するように、走行状態を制御する走行制御部17とを備えている。【選択図】図4
