VEHICLE POSITION REPORTING IN USER DEFINED UNI-DIMENSIONAL COORDINATE SYSTEM.

The method and the apparatus for the outputting in a uni-dimensional coordinate system the position coordinates and speed determined by the position and speed determining system (PSDS) are disclosed. The PSDS can include the SATPS receiver, the inertial positioning system, or the combination of both. The digital database of the geographic area is introduced by the user in the arbitrary coordinate system and is translated into the preferred coordinate system in order to define the uni-dimensional coordinate system. The large geographic area (LGA) and the small geographic area (SGA) embodiments are disclosed.