A generation support system configured to support generation of a route guidance database used to display a guiding line for guiding a moving body as an object of route guidance on a route, the route guidance database being referred to by a route guidance device to give a guidance display for guiding passage of the moving body on a route to be guided, wherein the route guidance device reads a route search result, which specifies the route to be guided by a combination of nodes and links with position coordinates as a retrieval result from a route search database constructed to include roads expressed by nodes and links with position coordinates, detects position coordinates of a current location of the moving body, and displays a route to be taken by the moving body by referring to the route search result according to the detected position coordinates of the current location of the moving body, the route guidance database having a data structure comprising: guiding line shape data, each piece being structured to specify a guiding line for guiding passage of the moving body on the route; and relevant information, each piece being provided in relation to each piece of the guiding line shape data and structured to correlate the guiding line shape data to the nodes and the links in the route search database, the generating support system comprising: a map data reference module configured to refer to three-dimensional map data used for displaying a three-dimensional map including features expressed in three-dimensional representation; a route guidance data reference module configured to refer to the route guidance database in a course of generation; a display controller configured to display the three-dimensional map in a view of the moving body as the object of route guidance based on the three-dimensional map data and to display the guiding line based on the route guidance database; a command input module configured to receive an operator's instruction on requirement or non-requirement for correction of the route guidance database as a checking result of the display; and a correction controller configured to, in response to the operator's correction instruction, shift the display to a correction window for correcting the route guidance database or to output correction-relating information usable to specify a position as a target of the correction instruction in the route guidance database. guiding line shape data, each piece being structured to specify a guiding line for guiding passage of the moving body on the route; and relevant information, each piece being provided in relation to each piece of the guiding line shape data and structured to correlate the guiding line shape data to the nodes and the links in the route search database, the generating support system comprising: a map data reference module configured to refer to three-dimensional map data used for displaying a three-dimensional map including features expressed in three-dimensional representation; a route guidance data reference module configured to refer to the route guidance database in a course of generation; a display controller configured to display the three-dimensional map in a view of the moving body as the object of route guidance based on the three-dimensional map data and to display the guiding line based on the route guidance database; a command input module configured to receive an operator's instruction on requirement or non-requirement for correction of the route guidance database as a checking result of the display; and a correction controller configured to, in response to the operator's correction instruction, shift the display to a correction window for correcting the route guidance database or to output correction-relating information usable to specify a position as a target of the correction instruction in the route guidance database. a map data reference module configured to refer to three-dimensional map data used for displaying a three-dimensional map including features expressed in three-dimensional representation; a route guidance data reference module configured to refer to the route guidance database in a course of generation; a display controller configured to display the three-dimensional map in a view of the moving body as the object of route guidance based on the three-dimensional map data and to display the guiding line based on the route guidance database; a command input module configured to receive an operator's instruction on requirement or non-requirement for correction of the route guidance database as a checking result of the display; and a correction controller configured to, in response to the operator's correction instruction, shift the display to a correction window for correcting the route guidance database or to output correction-relating information usable to specify a position as a target of the correction instruction in the route guidance database.