1. An on-vehicle information terminal comprising: an abridged road generating device that generates an abridged road by abridging a road map based upon a map data; a road decision-making device that makes a decision as to whether or not a road is a special shape road having a predetermined special shape based upon the map data; a substituting device that substitutes a specific road shape pattern stored in memory in advance for the road judged to be the special shape road by the road decision-making device; and a display control device that displays at a display device an abridged map containing the specific road shape pattern substituted for the special shape road by the substituting device and the abridged road generated by the abridged road generating device.