To　improve　the　service　reliability　by　utilizing　real-time　transit　vehicles　data,　a　novel　conditional　signal　priority　method　is　proposed.　The　method　has　four　features:　1)　the　accurate　management　of　a　transit　vehicle＇s　headway;　2)　innovative　use　of　triggered　phases,　to　flexibly　control　the　departure　time　of　transit　vehicles　based　on　headway　deviation;　3)　availability　at　actuated-coordinated　intersections,　to　ensure　the　rapid　passing　of　arterial　traffic,　while　taking　into　account　the　time-varying　needs　of　motorized　vehicles;　4)　an　alternate　passing　opportunity　providing　for　the　transit　vehicle　that　cannot　enable　the　priority　mode,　to　ensure　that　each　transit　vehicle　can　pass　the　stop　line　at　a　relatively　suitable　time.　Simulation　results　showed　that　the　proposed　signal　priority　method　can　significantly　improve　the　headway　regularity　in　the　transit　system　compared　with　the　methods　of　traditional　conditional　signal　priority,　unconditional　signal　priority,　and　no　signal　priority,　although　the　traffic　efficiency　of　vehicles　is　slightly　reduced.　©　2023　IEEE.