Abstract: An object detection device for detecting an object by transmitting and receiving ultrasonic waves, includes a transmitter that transmits an ultrasonic wave, two or more receivers, each of which receives an ultrasonic wave and outputs an reception signal according to the received ultrasonic wave, a comparator that compares the plurality of reception signals output from the two or more receivers and calculates a degree of similarity between the plurality of reception signals, and a determiner that makes a determination as to whether there is an object to be detected, based on the degree of similarity.

Abstract: An in-vehicle device includes a travel planning portion configured to plan, as a travel plan, at least positioning of a vehicle during traveling according to a driving policy; and a verification portion that is configured to: evaluate the travel plan set by the travel planning portion based on driving rule determination information in conformity with a traffic rule; and determine whether to permit the travel plan based on an evaluation result. The travel planning portion is configured to plan positioning of the vehicle according to the driving policy that is set to reduce a frequency of occurrence of a blind area entry situation under which a different vehicle other than the vehicle causes a moving object other than the different vehicle to be positioned within a blind area of a detection range for a periphery monitoring sensor that is configured to monitor surroundings of the vehicle.