Travel guidance device, travel guidance method, and computer program

The invention provides a travel guidance device comprising: means (31) for acquiring map data including a road network; means (11) for acquiring a position of a vehicle; means (13) for acquiring a planned travel route of the vehicle; means for determining whether among branches of the road network there is a planned entry branch located ahead in an advancing direction of the vehicle; means (13) for determining, if a planned entry branch is located ahead, whether there is a no-lane-change zone specified in the road network between the vehicle and the planned entry branch; means (13) for setting, if a no-lane-change zone is located between the vehicle and the planned entry branch, guidance content related to a lane change of the vehicle; and means (13) for performing guidance using the guidance content set by the guidance content setting unit.