Driving skill evaluation method, driving skill evaluation system, and non-transitory recording medium

A driving skill evaluation method according to an embodiment of the disclosure includes: performing a detection process of detecting a curve based on traveling data of a vehicle; and performing an evaluation process of evaluating a driving skill of a driver of the vehicle based on the traveling data at the curve. The evaluation process includes: generating a first kernel density estimation image based on the traveling data at a first curve detected by the detection process; calculating first similarity levels between the first kernel density estimation image and reference images associated with each of curves excluding the first curve, and calculating, for each of the curves, a first average similarity level that is an average value of the first similarity levels; and evaluating the driving skill of the driver based on the first average similarity level indicating a highest degree of similarity, of the first average similarity levels.