An information processing apparatus mounted on a vehicle comprising: a detection section including a variety of sensors and configured to detect information regarding the vehicle and/or a user of the vehicle; an output section configured to output information; a prediction section configured to predict accident probability of the vehicle driven by the user on the basis of a feature regarding the user of the vehicle or the vehicle or another vehicle, wherein the feature is: a driving feature based on information detected by the detection section in real time; or an attribute feature based on accumulated information detected by the detection section or registered information; and an output control section configured to cause information to be output to the user by the output section, the information corresponding to a factor that increases the accident probability predicted by the prediction section, wherein the factor is the feature itself, information estimated from the feature, or information estimated from the type of sensor corresponding to the feature, and configured to cause information to be output, the information issuing an instruction about an act that the user is to carry out to decrease the accident probability, characterized in that the output control section is configured to cause further information to be output to the user, the information indicating a positional relationship between the vehicle and the other vehicle and a negligence ratio of the vehicle to the other vehicle in case an accident happens. a detection section including a variety of sensors and configured to detect information regarding the vehicle and/or a user of the vehicle; an output section configured to output information; a prediction section configured to predict accident probability of the vehicle driven by the user on the basis of a feature regarding the user of the vehicle or the vehicle or another vehicle, wherein the feature is: a driving feature based on information detected by the detection section in real time; or an attribute feature based on accumulated information detected by the detection section or registered information; and an output control section configured to cause information to be output to the user by the output section, the information corresponding to a factor that increases the accident probability predicted by the prediction section, wherein the factor is the feature itself, information estimated from the feature, or information estimated from the type of sensor corresponding to the feature, and configured to cause information to be output, the information issuing an instruction about an act that the user is to carry out to decrease the accident probability, characterized in that the output control section is configured to cause further information to be output to the user, the information indicating a positional relationship between the vehicle and the other vehicle and a negligence ratio of the vehicle to the other vehicle in case an accident happens. a driving feature based on information detected by the detection section in real time; or an attribute feature based on accumulated information detected by the detection section or registered information; and an output control section configured to cause information to be output to the user by the output section, the information corresponding to a factor that increases the accident probability predicted by the prediction section, wherein the factor is the feature itself, information estimated from the feature, or information estimated from the type of sensor corresponding to the feature, and configured to cause information to be output, the information issuing an instruction about an act that the user is to carry out to decrease the accident probability, characterized in that the output control section is configured to cause further information to be output to the user, the information indicating a positional relationship between the vehicle and the other vehicle and a negligence ratio of the vehicle to the other vehicle in case an accident happens.