Abstract: A detection process unit detects an error of at least any of a plurality of work vehicles. A report process unit causes, when an error of a work vehicle among the plurality of work vehicles is detected, specific information on the work vehicle to be reported at an operation terminal communicable with each of the plurality of work vehicles.

Abstract: A setting process unit sets an inter-area route that causes a work vehicle to automatically run on a road that connects a plurality of fields, and sets, as an automatic run permission area that permits the automatic run of the work vehicle, a given range including the plurality of fields and the road which is for entering each of the plurality of fields.

Abstract: An autonomous travel system causes a work vehicle to autonomously travel along an inter-field route preset for a road connecting a field and a field. A travel processor causes the work vehicle to be stopped at a route start position of the inter-field route and to resume autonomous travel when a user is within a predetermined distance from the work vehicle in the field corresponding to the stop position of the work vehicle. An announcement process unit causes the work vehicle to announce travel information about travel on the inter-field route in the field.

Abstract: A detection process unit detects obstacles while the work vehicle is traveling on the road connecting the fields. A travel processor causes the work vehicle to perform avoidance travel when the obstacles are registered as the avoidance travel target that is a subject to be avoided by the work vehicle's avoidance travel, while it causes the work vehicle not to perform the avoidance travel when the obstacles are registered as the non-avoidance travel target that is a subject not to be avoided by the work vehicle's avoidance travel.

Abstract: This obstacle determination system determines the presence/absence of an obstacle around a work vehicle that has a work machine mounted thereto. The obstacle determination system is provided with an obstacle sensor, a preparation unit, and a determination unit. The obstacle sensor detects an obstacle, and the detection range thereof covers a work machine. The preparation unit prepares operation information indicating the movement of said work machine which is detected by the obstacle sensor while keeping the work machine in operation. On the basis of the operation information and the detection result of the obstacle sensor, the determination unit determines the presence/absence of an obstacle by recognizing an object other than the work machine.

Abstract: A work vehicle includes an engine, a post-processing device, and a cooling fan. The engine is mounted on a front portion of a travelling machine body. The post-processing device purifies exhaust gas of the engine. The cooling fan water-cools the engine. The cooling fan is located in front of the engine. The cooling fan, the engine, and the post-processing device are covered with a hood. The hood includes a shield. The shield covers a lower section of the post-processing device and one side of the engine. The shield is a perforated plate including a plurality of holes.

Abstract: A work vehicle includes an engine, a post-processing device, and a cooling fan. The engine is mounted on a front portion of a travelling machine body. The post-processing device purifies exhaust gas of the engine. The cooling fan water-cools the engine. The cooling fan is located in front of the engine. The cooling fan, the engine, and the post-processing device are covered with a hood. The hood includes a shield. The shield covers a lower section of the post-processing device and one side of the engine. The shield is a perforated plate including a plurality of holes.

Abstract: Disclosed is a truck lateral motion restricting device which can prevent a large impact from being applied to a stopper when the truck lateral motion restricting device is operated in the derailment. The device comprises a guard angle (52) which is provided along the inside of the rail (51) and a stopper (25) which projects downward from a more inward position than wheels (15) of the truck (11) and is in slidable contact with the inside surface (52a) of the guard angle, wherein the stopper comprises a slidable contact portion (28), which has a slidable contact surface slidable contact with the inside surface of the guard angle, and guide portions (31) which project at front and rear portions of the slidable contact portion and have a front end inclined in a direction separating from the inside surface of the guard angle and a base having a guide slope (31a) provided continuously to the slidable contact surface.

Abstract: Disclosed is a truck lateral motion restricting device which can prevent a large impact from being applied to a stopper when the truck lateral motion restricting device is operated in the derailment. The device comprises a guard angle (52) which is provided along the inside of the rail (51) and a stopper (25) which projects downward from a more inward position than wheels (15) of the truck (11) and is in slidable contact with the inside surface (52a) of the guard angle, wherein the stopper comprises a slidable contact portion (28), which has a slidable contact surface slidable contact with the inside surface of the guard angle, and guide portions (31) which project at front and rear portions of the slidable contact portion and have a front end inclined in a direction separating from the inside surface of the guard angle and a base having a guide slope (31a) provided continuously to the slidable contact surface.

Abstract: An information provider stores information in an information-providing server 10. Printer 30 acquires the information stored in the information providing server 10, prints the information on a print medium, and notifies the amount of printed information to the information providing server 10. The information provider for the amount of information that is notified pays the customer.