The　development　of　Connected　and　Autonomous　Vehicles　(CAVs)　brings　numerous　potential　benefits　to　the　transportation　system.　However,　during　their　widespread　adoption,　there　will　inevitably　be　a　transitional　phase　where　CAVs　coexist　with　Human-driven　Vehicles　(HVs)　for　an　extended　period,　presenting　challenges　to　both　traffic　flow　stability　and　the　realization　of　CAV＇s　full　advantages.　Dedicated　lanes　can　provide　CAVs　with　exclusive　road　rights,　thereby　helping　to　restore　traffic　order.　In　light　of　this,　this　paper　proposes　an　improved　Cell　Transmission　Model　(CTM)　capable　of　effectively　simulating　the　operational　states　of　multi-lane　mixed　traffic　flows.　Through　simulation　experiments　conducted　in　two　different　scenarios,　this　study　not　only　verifies　the　accuracy　and　applicability　of　the　model　but　also　provides　specific　recommendations　for　the　establishment　of　dedicated　lanes.　©　2024　IEEE.