Traffic condition notifying device, system and method

In response to a notification request for a traffic condition at a time when a predetermined period of time preset by an input operation of a user by a terminal input section (130) or at a predetermined predicted time, based on traffic information such as VICS data, current traffic-congestion information, traffic-congestion prediction information related to the traffic condition recognized by a traffic-congestion recognizer, a display controller generates current map information in which a traffic condition of a predetermined area at the current time clocked by a time is superimposed on map information as well as prediction map information in which a predicted traffic condition of the predetermined area when a predetermined period of time has passed as clocked by the timer is superimposed on the map information of the predetermined area. The display controller controls a terminal display (140) so that the current map information and the prediction map information are displayed substantially in parallel on a single display area to be displayed on the terminal display (140). Thus, the change in the traffic condition can easily be recognized by the user.