In　recent　years,　the　3GPP　Cellular　Vehicle　to　Everything　(C-V2X)　communication　protocol　has　been　widely　discussed　as　a　standard　for　vehicle　communications.　The　3GPP　C-V2X　defines　a　mode　4　operation　mode,　which　allows　vehicles　to　directly　communicate　with　each　other　without　relying　on　base　stations　or　road-side　units　(RSUs).　According　to　the　mode　4　specification,　vehicles　adopt　a　semi-persistent　scheduling　method　to　select　subchannels　(i.e.,　radio　resources)　by　themselves.　However,　the　SPS　method　will　induce　a　subchannel　collision　problem　due　to　location　changes　of　vehicles.　When　subchannel　collisions　occur,　vehicles　may　not　correctly　receive　broadcast　data　from　their　neighbor,　and　thus　transmission　reliability　cannot　be　preserved.　In　this　paper,　we　propose　a　localized　subchannel　selection　method.　The　basic　idea　is　that　each　vehicle　infers　its　moving　status　by　the　received　information　from　other　vehicles,　and　then　refers　to　its　moving　status　to　select　subchannels.　According　to　our　simulation　results,　the　proposed　scheme　can　effectively　reduce　subchannel　collision　ratio　and　increase　packet　reception　ratio.　©　2022　IEICE.