DRIVING ASSISTANCE SYSTEM, IN-VEHICLE CONTROL DEVICE, DRIVING ASSISTANCE METHOD AND COMPUTER READABLE MEDIUM

A database creation unit (154) accumulates, in a driving condition database (160), driving condition data wherein feature amounts representing features of driving operation, travelling environment information including travelling spots and road shapes, driver information including attributes of drivers and vehicle type information of vehicles, and whether the drivers have driving experiences of the vehicles are associated with driver identifiers. A driving characteristic estimation unit (155) estimates a driving characteristic of a driver presently driving a vehicle based on the driving condition database (160). The database creation unit (154) determines whether a target driver has a driving experience of a target vehicle based on the driving condition database (160), determines whether the driving experience of the target vehicle by the target driver is changed, and when it is determined to be changed, updates the driving experience of the target vehicle by the target driver in the driving condition database (160).