Driving characteristics diagnosis device, driving characteristics diagnosis system, driving characteristics diagnosis method, information output device, and information output method

A driving characteristics diagnosis method comprising the steps of:

• acquiring information related to an operational state of a vehicle by a computer;
• detecting dangerous driving by the user of the vehicle, and estimating a cause of the dangerous driving estimated, by the computer on the basis of the information that is acquired;
• and
• performing a diagnosis of driving characteristics for the user by the computer on the basis of the result of detection of the dangerous driving and the estimation of the cause of the dangerous driving.

An information output device wherein

• when a user has performed dangerous driving of a vehicle, outputs information for display upon a screen including at least one of:
• date, time, and a location at which the dangerous driving was performed;
• details of the dangerous driving;
• a cause of the dangerous driving;
• a blame ratio to be attributed to the user in relation to the dangerous driving;
• and driving advice to the user in relation to the dangerous driving.