Implementations described herein generally provide methods of configuring boot options. The receiving unit may include a detection circuit connected to a reception antenna directly. A traveling information control unit stores traveling information, which includes a state of the vehicle stopping at a stop point and a state of the vehicle passing by the stop point, in the traveling information storage unit. The freeboard portion is maintained using a depending flow barrier adjacent the vessel’s outlet which sets the depth of accumulation in the belly portion. The first and second directions are substantially parallel to the base plate.