Installation for managing the movement of vehicles on a railway network, the railway network being subdivided into a plurality of track resources (2, 3, 4, 5, 6) having at least two ends, the installation managing the movement at least of a first vehicle and of a second vehicle, the installation comprising a plurality of ground controllers and a plurality of consignment tables, each track resource (2, 3, 4, 5, 6) belonging to a single ground controller, each consignment table belonging to a track resource (2, 3, 4, 5, 6) and being capable of storing data relating to the management of the vehicles, the installation further comprising means for defining, from the first vehicle, an electronic consignment bulletin which authorises or does not authorise the entry of the second vehicle onto a track resource (2 to 6), and means (186, 187) for permitting the entry of the second vehicle onto said track resource only if authorised by the electronic consignment bulletin issued by the first vehicle, wherein - the electronic consignment bulletin is contained in the consignment table associated with the track resource and comprises a datum indicating the authorisation or not, for each of the ends of the track resource, to share the track resource with another vehicle, - each vehicle travelling on the network comprising a vehicle-borne controller, each vehicle-borne controller comprising means (182, 186) capable of reading the content of each consignment table, storage means capable of storing the content of each consignment table, and means for wireless communication with the other vehicles, the vehicle-borne controller being capable of calculating a movement authority for the associated vehicle, the vehicle-borne controller of the second vehicle being capable of reading the consignment table associated with the resource, and: - if, during the reading, the vehicle-borne controller determines that no other vehicle is travelling on the resource, of extending the movement authority of the second vehicle up to the end of the resource; and and characterised in that - if, during the reading, the vehicle-borne controller determines that the first vehicle is travelling on the resource, and if the first vehicle authorises sharing of the resource and is travelling in the opposite direction to the second vehicle: - of transmitting, to the first vehicle, a request for authorisation to extend the movement authority of the second vehicle up to a specified position, - of receiving from the first vehicle a response to the request to extend the movement authority of the second vehicle up to the specified position, - of calculating a new current movement authority, according to the specified position negotiated by the second vehicle with the first vehicle. - the electronic consignment bulletin is contained in the consignment table associated with the track resource and comprises a datum indicating the authorisation or not, for each of the ends of the track resource, to share the track resource with another vehicle, - each vehicle travelling on the network comprising a vehicle-borne controller, each vehicle-borne controller comprising means (182, 186) capable of reading the content of each consignment table, storage means capable of storing the content of each consignment table, and means for wireless communication with the other vehicles, the vehicle-borne controller being capable of calculating a movement authority for the associated vehicle, the vehicle-borne controller of the second vehicle being capable of reading the consignment table associated with the resource, and: - if, during the reading, the vehicle-borne controller determines that no other vehicle is travelling on the resource, of extending the movement authority of the second vehicle up to the end of the resource; and and characterised in that - if, during the reading, the vehicle-borne controller determines that the first vehicle is travelling on the resource, and if the first vehicle authorises sharing of the resource and is travelling in the opposite direction to the second vehicle: - of transmitting, to the first vehicle, a request for authorisation to extend the movement authority of the second vehicle up to a specified position, - of receiving from the first vehicle a response to the request to extend the movement authority of the second vehicle up to the specified position, - of calculating a new current movement authority, according to the specified position negotiated by the second vehicle with the first vehicle.