One lane of Madison Avenue in Midtown is limited to turns made by city buses or taxicabs, at some hours of the day. Based on Section 4-12(m) of the New York City Traffic Rules, driving a vehicle, other than a bus, is prohibited in the bus lane on Madison Avenue to turn right during the restricted hours specified by sign between 42nd Street and 59th Street. All vehicles are allowed at 60th Street, but a taxicab carrying a passenger may use the bus lane to turn right at 46th Street.