Route information creation apparatus and method of creating route information

A route information creation apparatus, comprising:

• a processor to execute a program;
• and
• a memory to store the program which, when executed by the processor, performs processes of:
• obtaining first route information including at least first node information including information for determining an inflow link or an outflow link, in a first route calculated using a first map including road shape information on a per road basis;
• obtaining a second map including road shape information represented by a format different from a format of the first map;
• determining whether the first node information included in the obtained first route information is associated with at least one second link, based on the first route information and association information indicating a correspondence between the first node information in the first map and the second link in the second map;
• and
• creating second route information in a second route on the second map which corresponds to the first route, based on the second link determined with which the first node information is associated and based on the obtained second map, the second route information including the second link,
• wherein when a second node on the second map which corresponds to a specific first node on the first map does not include a second outflow link that flows out of the second node on the second map which corresponds to a first outflow link that flows out of the specific first node, the association information includes information for associating, with the first outflow link, an other second outflow link that flows out of an other second node in a vicinity of the second node, and when the second node does not include a second inflow link that flows into the second node on the second map which corresponds to a first inflow link that flows into the specific first node, the association information includes information for associating, with the first inflow link, an other second inflow link that flows into an other second node in the vicinity of the second node.