Patent ID: 8209116

Claim:
A navigation system comprised of a navigation apparatus which is configured to guide a mobile subject and a navigation server which is configured to support the guiding of a mobile subject performed by the navigation apparatus on the basis of communication with the navigation apparatus, wherein: the navigation apparatus includes a first processing element which is configured to define a navigation route joining a present position and a destination position of the mobile subject on the basis of navigation map information stored in a navigation map storing element and road traffic information distributed or broadcasted from the navigation server; and a second processing element which is configured to recognize a specified area surrounded by a frame encompassing a road as a part of the specified area, and situation information representing a situation which affects the movement of the mobile subject in the specified area and relates to at least one of weather, natural phenomenon, and man-made disaster on the basis of communication with the navigation server, determine whether an entry position to the specified area is present in the navigation route defined by the first processing element, wherein the entry position is an intersection of the navigation route and the frame where the navigation route enters the specified area, and display on a navigation display an icon as a mark having a design in relation to the situation information only at the entry position on a map based on the navigation map on a condition that the presence of the entry position is determined; and the navigation server includes a first support processing element which is configured to recognize a specified area surrounded by a frame encompassing a road as a part of the specified area, and situation information representing a situation which affects the movement of the mobile subject in the specified area and relates to at least one of weather, natural phenomenon, and man-made disaster, both of which are stored in a situation information storing element; and a second support processing element which is configured to enable the navigation apparatus to recognize the specified area and the situation information recognized by the first support processing element on the basis of communication with the navigation apparatus.