Abstract: A wheel loader 100 includes a front working device 101, an automatic brake device that automatically applies braking to a vehicle body, a vehicle speed sensor 15 that detects a vehicle speed of the vehicle body, an angle sensor 37 that detects a height of the front working device 101, an obstacle detection sensor 29 that detects an obstacle present in surroundings of the vehicle body, and a brake controller 27 that controls operation of the automatic brake device on the basis of a detection signal from the obstacle detection sensor 29, wherein the brake controller 27 limits a braking force of the automatic brake device when the height h of the front working device 101 is equal to or greater than a predetermined height h1, or the vehicle speed v is equal to or greater than a predetermined vehicle speed v1, and the obstacle has been detected by the obstacle detection sensor 29.

Abstract: A working vehicle travel control apparatus, comprising: a variable displacement hydraulic pump; a variable displacement hydraulic motor connected in a closed circuit to the hydraulic pump and driven upon pressure oil from the hydraulic pump; a first control unit controls a motor displacement angle of the hydraulic motor by an electrical signal; a constant mesh transmission includes a clutch device that includes a High clutch section transmits power at a first transmission gear ratio and a Low clutch section that transmits power at a second transmission gear ratio, which is greater than the first transmission gear ratio, the constant mesh transmission transmits or interrupts power from the hydraulic motor; and a second control unit controls the first control unit so as to reduce the motor displacement angle to a predetermined value when the transmission is switched from the first transmission gear ratio to the second transmission gear ratio.

Abstract: A working vehicle travel control apparatus, comprising: a variable displacement hydraulic pump; a variable displacement hydraulic motor connected in a closed circuit to the hydraulic pump and driven upon pressure oil from the hydraulic pump; a first control unit controls a motor displacement angle of the hydraulic motor by an electrical signal; a constant mesh transmission includes a clutch device that includes a High clutch section transmits power at a first transmission gear ratio and a Low clutch section that transmits power at a second transmission gear ratio, which is greater than the first transmission gear ratio, the constant mesh transmission transmits or interrupts power from the hydraulic motor; and a second control unit controls the first control unit so as to reduce the motor displacement angle to a predetermined value when the transmission is switched from the first transmission gear ratio to the second transmission gear ratio.