Third refinement Sample Clauses

Third refinement. The on-board controller of each train sends its id number, its speed and its position (position of the rear and position of the front) to the wayside controller. The wayside controller send to each train a permit to go forward until a MAL (movement authorization limit). There is no common cell between the authorized area (area from the front of the train to the MAL) and Train_extended_occupancy of any other train.