PROBLEM TO BE SOLVED: To constitute a working vehicle so as to perform its operation control with a proper timing.SOLUTION: This working vehicle is equipped with a traveling distance-detecting means for detecting the traveling distance of a machine body, based on the number of rotations of its wheels, a steering angle-detecting means for detecting the steering angle of wheels, capable of freely performing its steering operation and an operation-controlling device performing the operation control, based on the traveling distances of the machine body detected by the traveling distance-detecting means and the steering angles of the wheels detected by the steering angle-detecting means.COPYRIGHT: (C)2009,JPO&INPIT【課題】 作業車において、操作制御が適切なタイミングで行われるように構成する。【解決手段】 車輪の回転数に基づいて機体の走行距離を検出する走行距離検出手段と、操向操作自在な車輪の操向角度を検出する操向角度検出手段とを備える。走行距離検出手段で検出された機体の走行距離と、操向角度検出手段で検出された車輪の操向角度とに基づいて、操作制御を行う操作制御手段を備える。【選択図】 図9