PROBLEM TO BE SOLVED: To determine whether a vehicle is on the road or a farm field by a simple structure using positional information of a GPS satellite.SOLUTION: A working vehicle includes: coordinate measurement means for measuring the coordinates of a self position by receiving an electric wave through a GPS antenna from a GPS satellite entrance setting means for setting a region in the vicinity of a farm field entrance on a coordinate display screen 53 of the working vehicle from the electric wave from the GPS satellite farm field region setting means for setting a farm field region on the coordinate display screen 53 from the electric wave from the GPS satellite road position setting means for setting positional information on the road in the vicinity of the farm field from the electric wave from the GPS satellite on the coordinate display screen 53 entrance ingress/aggress travelling determination means for recognizing the advancing direction of the working vehicle from the travelling history information of the working vehicle and a controller 51 having on-farm/road travelling determination means for determining whether the present working vehicle position is on-road travelling or on-farm travelling according to the advancing direction of the vehicle when passing the farm field entrance region set by the entrance setting means.SELECTED DRAWING: Figure 10COPYRIGHT: (C)2016,JPO&INPIT【課題】 本発明は、GPS衛星の位置情報を利用して簡単な構成で車両が路上にいるか圃場にいるかを判断する。【解決手段】 GPS衛星からの電波をGPSアンテナで受信し自己位置の座標を測定するための座標測定手段と、GPS衛星の電波から圃場出入口付近の領域を作業車両の座標表示画面53に設定する出入口設定手段と、GPS衛星の電波から圃場領域を前記座標表示画面53に設定する圃場領域設定手段と、GPS衛星の電波から圃場周辺の道路の位置情報を前記座標表示画面53に設定する道路位置設定手段と、作業車両の走行履歴情報から作業車両の進行方向を認識する出入口進入/退出走行判定手段と、前記出入口設定手段で設定された圃場出入口領域を通過した際の進行方向により現在の作業車両位置が路上走行であるか圃場走行であるかを判定する圃場/路上走行判定手段を有するコントローラ51を備えた作業車両。【選択図】図10
