A travel information processing apparatus comprising: a voice input device configured to input voice data of a user; an indicated object estimation unit configured to specify an object by estimating from the voice data based on a word extracted from the voice data and indicating the object as a target for changing a traveling motion of a subject vehicle around a traveling route, a word extracted from the voice data and indicating a positional relationship of the object, and a word extracted from the voice data and related to a traveling command to the subject vehicle, and to specify one or more features of the object based on the voice data; an object feature estimation unit configured to select one or more additional features of the object different from or more detailed than the object features specified based on the voice data; an output device configured to output image data or voice data indicating the object and explaining a position and a traveling motion for changing the traveling motion of the subject vehicle, the image data or voice data comprising information indicating the additional features of the object; and a travel information processor configured to change a traveling motion of the subject vehicle based on the object. a voice input device configured to input voice data of a user; an indicated object estimation unit configured to specify an object by estimating from the voice data based on a word extracted from the voice data and indicating the object as a target for changing a traveling motion of a subject vehicle around a traveling route, a word extracted from the voice data and indicating a positional relationship of the object, and a word extracted from the voice data and related to a traveling command to the subject vehicle, and to specify one or more features of the object based on the voice data; specify an object by estimating from the voice data based on a word extracted from the voice data and indicating the object as a target for changing a traveling motion of a subject vehicle around a traveling route, a word extracted from the voice data and indicating a positional relationship of the object, and a word extracted from the voice data and related to a traveling command to the subject vehicle, a word extracted from the voice data and indicating the object as a target for changing a traveling motion of a subject vehicle around a traveling route, a word extracted from the voice data and indicating a positional relationship of the object, and a word extracted from the voice data and related to a traveling command to the subject vehicle, and to specify one or more features of the object based on the voice data; an object feature estimation unit configured to select one or more additional features of the object different from or more detailed than the object features specified based on the voice data; an output device configured to output image data or voice data indicating the object and explaining a position and a traveling motion for changing the traveling motion of the subject vehicle, the image data or voice data comprising information indicating the additional features of the object; and a travel information processor configured to change a traveling motion of the subject vehicle based on the object.