1. An on-vehicle information terminal that generates an abridged map by abridging a map based upon map data and displays the abridged map, comprising: an abridgment factor setting unit that sets an abridgment factor indicating an extent to which the map is to be abridged; a map abridging unit that generates the abridged map with specific contents in correspondence to the abridgment factor set by the abridgment factor setting unit; and a display unit that displays the abridged map generated by the map abridging unit, wherein: if the abridgment factor is set to a highest level, the map abridging unit generates an abridged map that includes a route having been set which is indicated as a straight line and names of guidance-requiring intersections at which the route makes a turn displayed on the straight line.