Patent ID: 6827315
Filing Date: 2004-12-07
Classification: B61L

Abstract:
In a track system organized with track sectors and having a route level with routes and a switchgear level with route segments, the route level and the switchgear level being coupled for requesting a setting of a route segment and to signal train positions, an overfilling prevention method for preventing an overfilling of the track system, which comprises the following steps:defining train positions of trains on the track system with a train identifier and a track sector; and prior to setting a requested route segment for a given train, querying the route level to determine, by checking train positions, whether the given train is allowed to travel on the track sectors to be used for the requested route segment, without the track system becoming overfilled; wherein the step of checking train positions is performed in the route level and comprises the following substeps performed in the route level: a) storing a first dependency according to which a new train position cannot be reached until the train has reached a track sector that directly precedes the route, the first dependency being defined as a compulsory sequence of two train positions; b) checking, for a variation of two trains, whether a reference location of a first train prevents the route of a second train being traveled on resulting in a second dependency, and storing the second dependency; c1) generating, for all the trains, new dependencies by applying a transitivity from the stored dependencies, and storing the new dependencies; and c2) checking the new dependencies whether a compulsory sequence according to which the first train must travel to a first track sector before the second train can travel to a second track sector.