Patent ID: 8214091
Filing Date: 2012-07-03
Classification: B61L

Abstract:
1. A system for determining a possible location of a train in a track network comprising a plurality of interconnected tracks having a plurality of wayside devices associated with the tracks, the system comprising: a positioning system configured to determine an estimated location area of a train within the track network; a track database comprising track location data; a computer configured to: wherein, when a plurality of possible train locations is determined, the computer is further configured to: determine a direction of travel of the train; determine at least one of a track route forward and a track route backward for each of the plurality of possible train locations; obtain signal system data for at least one wayside device associated with at least one of the track route forward and the track route backward for at least one of the plurality of possible train locations; and determine a best possible train location based upon at least one of the following: the determined direction of travel, the determined track route forward, the determined track route backward, the obtained signal system data.