An on-vehicle information terminal generates an abridged map by abridging
a map based upon map data and displays the abridged map. The on-vehicle
information terminal comprises 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.