A method in a vehicle configured to communicate in a vehicle point-to-multipoint communication system is provided. The method includes selecting a transmission resource comprising a sub-channel frequency range and time slot on which to compete for communication rights, competing with one or more vehicles for communication rights on the transmission resource using a listen-before-talk algorithm, and transmitting vehicle data on the transmission resource won.A method in a communication system is provided. The method includes partitioning a vehicle travel pathway into a plurality of geographical bins, grouping the bins into one or more regions, mapping each bin in a region to a different transmission resource, preparing a data record containing the mapping of geographical bins to transmission resources, and providing the data record to one or more vehicles that travel down the travel pathway for identifying to the one or more vehicles the transmission resource on which to transmit data.