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Speed regulating control for vehicle which identifies roadside speed limit signs and with a manual override option for the driver?keyword=Speed regulating control for vehicle which identifies roadside speed limit signs and with a manual override option for the driver?keyword=Speed regulating control for vehicle which identifies roadside speed limit signs and with a manual override option for the driver?keyword=Speed regulating control for vehicle which identifies roadside speed limit signs and with a manual override option for the driver 专利,更快更准确