IN-VEHICLE APPARATUS

An in-vehicle apparatus includes a load weight information obtainer, a load information obtainer, an aerodynamic analyzer, a driving stability determiner, a control processor, and a proposer. The load weight information obtainer acquires a load weight of a load placed on a roof rail or a roof carrier of a vehicle. The load information obtainer acquires load information including a size and a shape of the load from image data on the load. The aerodynamic analyzer executes an aerodynamic analysis based on the load information. The driving stability determiner determines driving stability in travel of the vehicle based on the load weight and a result of the aerodynamic analysis. The control processor prohibits the vehicle from traveling when the driving stability is determined not to be sufficiently secured in the travel of the vehicle. The proposer proposes an appropriate loading way to place the load on the vehicle.