PROBLEM TO BE SOLVED: To allow a work vehicle to surely avoid coming in contact with an obstacle during its automatic operation.SOLUTION: A work vehicle comprises an electronic control system for vehicle automatic operation in which a vehicle is automatically operated. The electronic control system includes: a plurality of obstacle detection modules for detecting whether an obstacle is present or not and a contact avoidance control unit for performing contact avoidance control for avoiding coming into contact with the obstacle when the obstacle is detected by the obstacle detection modules. The obstacle detection modules include a plurality of obstacle search instruments 68 that are arranged to be separated into a front end part of the vehicle and right and left side parts of the vehicle so that a front side and right and left sides of the vehicle can be areas to be searched.SELECTED DRAWING: Figure 2【課題】自動運転中に作業車が障害物に接触する虞をより確実に回避できるようにする。【解決手段】作業車は、車体を自動で運転する自動運転用の電子制御システムを備え、電子制御システムは、障害物の有無を検出する複数の障害物検出モジュールと、障害物検出モジュールが障害物を検出したときに障害物との接触を回避する接触回避制御を行う接触回避制御部とを備え、障害物検出モジュールは、車体の前方と左右両側方とが探査対象領域になるように、車体の前端部と左右両端部とに分散して配置された複数の障害物探査器68を備えている。【選択図】図2
