ROUTE SEARCH SYSTEM, ROUTE SEARCH METHOD, AND ROUTE SEARCH PROGRAM

A route search system according to one embodiment includes a receiving unit, a first search unit, a determination unit, a second search unit, and an output unit. The receiving unit receives search criteria. The first search unit searches for a first route and time required based on the search criteria by referring to a storage unit that stores route information. The determination unit determines whether a difference between user's time and the time required is equal to or more than a specified value. When the difference is the specified value or more, the second search unit searches for a second route that takes a longer time than the first route. The output unit outputs the second route.