Abstract: The invention proposes an emergency call system for a motor vehicle for automatically transmitting an emergency call to an external receiving station. The motor vehicle has measuring means, for example in the form of a radar system (6), for determining the relative speed and the distance of the vehicle in relation to another vehicle or an obstacle. If the current relative speed exceeds a predetermined limit value for a given distance, it is assumed that a collision is unavoidable, and an emergency call by a transmitter (3) provided in the motor vehicle is activated. Advantageously, the vehicle position, ascertained by means of a navigation system (4), is transmitted to the receiving station with the emergency call. The invention also provides for the emergency call system to be connected to further sensors (6), suitable for detecting a collision, so that the emergency call can be revoked if an actual collision is not reported by such a sensor within a predetermined time period.

Abstract: The invention relates to a navigation system for a vehicle, including an arithmetic circuit (1) which is arrangedto evaluate traffic information received,to calculate a first route without taking into account the traffic information and a second route while taking into account the traffic information,to determine the position of the vehicle by means of at least one sensor signal, and also including an output device (6) for outputting route information supplied by the arithmetic circuit (1). In order to enhance the user friendliness of such a system, the arithmetic circuit (1) is also arrangedto supply the output device (6) with selection information offering a second route as an alternative for the first route, andto supply route information concerning the route taken after output of the selection information.

Abstract: The invention relates to a method for outputting direction information relating to a route planned by means of a navigation system.In order to achieve simple and economical implementation of such a navigation system and to enable simple, reliable and unambiguous indication of direction information also in partly digitized areas, a first direction indication is provided for indicating the direct direction from an instantaneous vehicle position to a remote point along the planned route, said remote point being situated a forward distance ahead of the instantaneous vehicle position and being continuously adapted in dependence on the vehicle position.

Abstract: The invention relates to a navigation system for a vehicle with a navigation unit (1) in which navigation information is generated and which comprises at least one motional element (10, 11) which call be moved and/or vibrated and a control unit (8) which receives the navigation information at its input side and whose output signal controls the movement and/or vibration of the motional element (10, 11) as control information.

Abstract: Display system for displaying a net of interconnected geographical paths provided with associated geographical names and road vehicle with on-board road-based navigation system having such display system The display system allows to display a steady net of distinct and interconnected geographical paths and stores the net as an arrangement of vectors each associated to a particular path. First, an intended selection is read from the net for displaying. The storage contains the vectors often provided with an associated geographical name. For easy and clear display, the system has a font generator for the path name for when ready for display, displaying the name as a row of characters alongside its associated displayed path while featuring a multi-valued and finite orientation repertoire for the characters.