A method of distributing intention signaling messages for a vehicle, said method being carried out by the vehicle, said vehicle having a plurality of directional radio antennas oriented to transmit radio signals in predetermined and distinct directions, said method comprising the steps of a. Responsive to an intended change in vehicle motion, selecting at least one of a plurality of directional radio antennas facing in the direction of surrounding traffic which would be affected by the intended change in motion b. Forming and transmitting an intention signaling message corresponding to the intended change in vehicle motion by means of the directional radio antenna selected in step a, c. Receiving by means of at least one of the plurality of directional radio antennas an intention signaling message from at least a second vehicle d. Examining the content of the message received in step c. to select at least one of directional radio antennas facing in the direction of surrounding traffic which would be affected by the intended change communicated in said received message e. Transmitting the message received in step c. by means of the directional radio antenna selected in step d. wherein said forming of an intention signaling message in step b. further comprises determining the desired number of repeat transmissions for the message, wherein said message received in step c. contains information on requested number of repeat transmissions, and information on completed number of repeat transmissions, and wherein examining the content of the received message in step d. further comprises modifying the message content by incrementing the number of completed repeat transmissions by 1, and wherein step e. comprises transmitting the message modified in step d. only if the requested number of repeat transmissions is greater than the completed number of repeat transmissions,wherein determining the desired number of repeat transmissions is responsive to the magnitude of the intended change. a. Responsive to an intended change in vehicle motion, selecting at least one of a plurality of directional radio antennas facing in the direction of surrounding traffic which would be affected by the intended change in motion b. Forming and transmitting an intention signaling message corresponding to the intended change in vehicle motion by means of the directional radio antenna selected in step a, c. Receiving by means of at least one of the plurality of directional radio antennas an intention signaling message from at least a second vehicle d. Examining the content of the message received in step c. to select at least one of directional radio antennas facing in the direction of surrounding traffic which would be affected by the intended change communicated in said received message e. Transmitting the message received in step c. by means of the directional radio antenna selected in step d. wherein said forming of an intention signaling message in step b. further comprises determining the desired number of repeat transmissions for the message, wherein said message received in step c. contains information on requested number of repeat transmissions, and information on completed number of repeat transmissions, and wherein examining the content of the received message in step d. further comprises modifying the message content by incrementing the number of completed repeat transmissions by 1, and wherein step e. comprises transmitting the message modified in step d. only if the requested number of repeat transmissions is greater than the completed number of repeat transmissions,wherein determining the desired number of repeat transmissions is responsive to the magnitude of the intended change. wherein said forming of an intention signaling message in step b. further comprises determining the desired number of repeat transmissions for the message, wherein said message received in step c. contains information on requested number of repeat transmissions, and information on completed number of repeat transmissions, and wherein examining the content of the received message in step d. further comprises modifying the message content by incrementing the number of completed repeat transmissions by 1, and wherein step e. comprises transmitting the message modified in step d. only if the requested number of repeat transmissions is greater than the completed number of repeat transmissions,wherein determining the desired number of repeat transmissions is responsive to the magnitude of the intended change.