PROBLEM TO BE SOLVED: To provide a work vehicle autonomous traveling system that even when a work vehicle hardly performs work during autonomous traveling in a farm field, enables the work vehicle to easily return to the work.SOLUTION: A work vehicle autonomous traveling system 1 for a work vehicle 100, in which the work vehicle includes an automatic operation ECU 302, a sensor abnormality detection unit 308, and withdrawal means for suspending work traveling and withdrawing a vehicle body to a predetermined location. The automatic operation ECU 302 can create farm field shape information via traveling along an inner periphery of a farm field 13 while a location information acquisition unit 301 acquiring location information on the work vehicle. When the sensor abnormality detection unit 308 detects abnormality of a sensor mounted on the vehicle during work traveling in the farm field 13, the work vehicle 100 is moved to a preset standby location 18 by the withdrawal means. Since detection of sensor abnormality caused during work traveling by the sensor abnormality detection unit 308 causes suspension of the work traveling and movement to the standby location 18 by the withdrawal means, the work traveling is inhibited from being continued in a state in which autonomous traveling has a trouble caused by the sensor abnormality.SELECTED DRAWING: Figure 8COPYRIGHT: (C)2020,JPO&INPIT【課題】作業車両が圃場を自律走行中に作業をすることが困難になっても、容易に作業に復帰することができる作業車両の自律走行システムを提供する。【解決手段】作業車両１００が自動運転ＥＣＵ３０２と、センサ異常検出部３０８と、作業走行を中断して機体を所定位置まで退避させる退避手段とを備え、自動運転ＥＣＵ３０２は、位置情報取得部３０１により自機の位置情報を取得しながら圃場１３の内周を走行して圃場形状情報を作成でき、圃場１３を作業走行中にセンサ異常検出部３０８が車両に搭載したセンサの異常を検出すると、あらかじめ設定された待機場所１８に退避手段によって作業車両１００を移動させる作業車両の自律走行システム１によれば、作業走行中に生じたセンサ異常をセンサ異常検出部３０８が検出すると、作業走行を中断し、退避手段により待機場所１８に移動するので、センサの異常により自律走行に問題がある状態で作業走行が続行されることがない。【選択図】 図８
