As　the　uncertain　features　of　the　freeway　traffic　flow,　fuzzy　control　can　be　used　as　an　acceptable　way　to　solve　traffic　problem.　A　new　Fuzzy　Ramp　Metering　controller　is　proposed　that　includes　fuzzy　decision　maker　to　output　the　cycle　time　for　traffic　light　and　a　switching　function　to　decide　the　change　making　of　the　light.　Six　elements　for　freeway　condition　serve　as　inputs　for　the　control　process.　Simulation　results　has　been　compared　to　the　ALINEA　method　according　to　performance　index.