Ad hoc communication network comprising: - at least one piece of vehicle-side radio equipment connected to a vehicle for wireless communication, - a plurality of pieces of track-side radio equipment (4a...c, 34a...c, 44a...e) installed on a route of the vehicle for wireless communication, - a monitoring and control unit which is connected to at least one of the pieces of track-side radio equipment (4a...c, 34a...c, 44a...e) for communication, wherein - the track-side radio equipment (4a...c, 34a...c, 44a...e) is configured to communicate wirelessly without logical connection to other pieces of track-side radio equipment (4a...c, 34a...c, 44a...e) situated in radio range and to the vehicle-side radio equipment, and to forward received data to other track-side radio equipment (4a...c, 34a...c, 44a...e) situated in radio range, and - the pieces of track-side radio equipment (4a...c, 34a...c, 44a...e) are arranged such that at least two other pieces of track-side radio equipment (4a...c, 34a...c, 44a...e) are situated in any direction along the route in radio range of each of the pieces of track-side radio equipment (4a...c, 34a...c, 44a...e), and - the pieces of track-side radio equipment (4a...c, 34a...c, 44a...e) are embodied such that they transfer received data to the next piece of track-side radio equipment and the piece of equipment after next (4a...c, 34a...c, 44a...e) in a direction along the route, characterised in that - both the piece of vehicle-side radio equipment and the pieces of track-side radio equipment (44a, 44b, 44c, 44d, 44e) are configured to communicate on at least three channels (521, 522, 523) which are different from one another, consisting of a first radio channel, a second radio channel and a third radio channel, - the pieces of track-side radio equipment (44a, 44b, 44c, 44d, 44e) each have two transceiver units and a receiver unit, wherein the receiver unit is embodied for unidirectional data receipt from the directly adjacent pieces of track-side radio equipment (44a, 44b, 44c, 44d, 44e) in each case, on a first of the channels (521, 522, 523), one of the two transceiver units is embodied for bidirectional communication with the piece of track-side radio equipment (44a, 44b, 44c, 44d, 44e) after next in the first direction along the route on a second channel different from the first channel and the other of the two transceiver units is embodied for bidirectional communication with the piece of track-side radio equipment (44a, 44b, 44c, 44d, 44e) after next in a second direction different from the first direction along the route on a third channel different from the first and second channel, - and the use of the three different radio channels (521, 522, 523) per piece of track-side radio equipment (44a, 44b, 44c, 44d, 44e) along the route takes place in an alternating, repeating sequence. - at least one piece of vehicle-side radio equipment connected to a vehicle for wireless communication, - a plurality of pieces of track-side radio equipment (4a...c, 34a...c, 44a...e) installed on a route of the vehicle for wireless communication, - a monitoring and control unit which is connected to at least one of the pieces of track-side radio equipment (4a...c, 34a...c, 44a...e) for communication, wherein - the track-side radio equipment (4a...c, 34a...c, 44a...e) is configured to communicate wirelessly without logical connection to other pieces of track-side radio equipment (4a...c, 34a...c, 44a...e) situated in radio range and to the vehicle-side radio equipment, and to forward received data to other track-side radio equipment (4a...c, 34a...c, 44a...e) situated in radio range, and - the pieces of track-side radio equipment (4a...c, 34a...c, 44a...e) are arranged such that at least two other pieces of track-side radio equipment (4a...c, 34a...c, 44a...e) are situated in any direction along the route in radio range of each of the pieces of track-side radio equipment (4a...c, 34a...c, 44a...e), and - the pieces of track-side radio equipment (4a...c, 34a...c, 44a...e) are embodied such that they transfer received data to the next piece of track-side radio equipment and the piece of equipment after next (4a...c, 34a...c, 44a...e) in a direction along the route, - both the piece of vehicle-side radio equipment and the pieces of track-side radio equipment (44a, 44b, 44c, 44d, 44e) are configured to communicate on at least three channels (521, 522, 523) which are different from one another, consisting of a first radio channel, a second radio channel and a third radio channel, - the pieces of track-side radio equipment (44a, 44b, 44c, 44d, 44e) each have two transceiver units and a receiver unit, wherein the receiver unit is embodied for unidirectional data receipt from the directly adjacent pieces of track-side radio equipment (44a, 44b, 44c, 44d, 44e) in each case, on a first of the channels (521, 522, 523), one of the two transceiver units is embodied for bidirectional communication with the piece of track-side radio equipment (44a, 44b, 44c, 44d, 44e) after next in the first direction along the route on a second channel different from the first channel and the other of the two transceiver units is embodied for bidirectional communication with the piece of track-side radio equipment (44a, 44b, 44c, 44d, 44e) after next in a second direction different from the first direction along the route on a third channel different from the first and second channel, - and the use of the three different radio channels (521, 522, 523) per piece of track-side radio equipment (44a, 44b, 44c, 44d, 44e) along the route takes place in an alternating, repeating sequence.