Abstract: An apparatus for guiding a vehicle allowing a route sweep is disclosed. The apparatus includes a display which shows a portion of a map. The user may move the map on the display from a start point to a finish point. This movement is termed a route sweep. To carry out a route sweep allowing a user to take cognizance of a route proposed by the apparatus, the maximum rate of sweep of the map on a display screen, the so-called cruising rate (L), desirable to obtain a short sweep time, is first calculated. Then starting from a specified scale (R.S.), the map is moved at an increasing rate in such a way as to arrive at the cruising rate (L) after a predetermined time. Simultaneously, the scale (chain-dotted curve) is reduced so as to arrive after the same time at a scale which is compatible with the cruising rate.