Methods and apparatus for allocating cellular vehicle-to-everything (C-V2X) radio transmission resources for transmitting messages in a C-V2X network from amongst a pool of initial resources comprised within a plurality of subframes. For each subframe in the plurality of subframes, it is determined whether transmitting in the subframe is likely to cause reception degradation with other C-V2X messages being transmitted in the C-V2X network, and if yes, all resources in the subframe are excluded prior to allocating a resource for transmission.