Driving assistance function proposal system and proposal method for driving assistance function proposal system

A proposal method for a driving assistance function proposal system comprising:

• acquiring an operation history of a driving assistance function used by a plurality of probe vehicles, the operation history including position information from the plurality of probe vehicles when the driving assistance function is operated;
• setting a proposal point at which a use frequency of the driving assistance function by one of the probe vehicles is greater than a predetermined threshold on a basis of the operation history;
• determining whether a prior use frequency of the driving assistance function for the proposal target vehicle at the proposal point is equal to or greater than a proposal unnecessariness threshold;
• determining whether a number of prior uses of the driving assistance function for the proposal target vehicle at the proposal point is equal to or greater than the proposal unnecessariness threshold;
• and
• upon determination that the prior use frequency of the driving assistance function for the proposal target vehicle at the proposal point is not equal to or greater than the proposal unnecessariness threshold and the number of prior uses of the driving assistance function for the proposal target vehicle at the proposal point is not equal to or greater than the proposal unnecessariness threshold, proposing use of the driving assistance function to a driver of the proposal target vehicle at the proposal point.