To solve the problem that conventionally the performance of an unmanned work vehicle cannot be presented as a whole when trouble or unexpected work state occurs in the vehicle since the vehicle is conventionally provided for working on one work site and that there is no managing system for working plural vehicles on plural work sites.
A host control part H, provided with communication equipment with plural tractors and so on, is provided with a database D1 for storing the working speed of each of tractors and a database D2 for storing the area of a field at least, an arithmetic part is provided for simulation in the case of working these plural tractors in the plural fields, on the basis of these database, and the simulated result is corrected properly, corresponding to the working conditions of the tractors.
WATABE TOMOAKI
SHINODA MASANORI
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