P.R. Laws tit. 9, § 5421
The use and installation of whistles, sirens and bells of any type on private motor vehicles is illegal. This provision shall not apply to vehicles authorized to handle emergencies of the federal government, the Firefighter Corps, the Puerto Rico and Municipal Police, the Ranger Corps of the Department of Natural and Environmental Resources, the Corrections Administration, the General Court of Justice, the Traffic Ordinance Corps, the Commonwealth Emergency Management and Disaster Administration Agency, the Public Works Commission and the Environmental Quality Board that are authorized to act in emergencies, as well as ambulances and vehicles that are owned by private entities that render security and protection services to persons or real or movable property that are duly identified and authorized by law to operate as such, when said vehicles are engaged in emergencies or preventive patrolling services.
History —Jan. 7, 2000, No. 22, § 14.21; June 3, 2004, No. 132, § 14, eff. 8 months after June 3, 2004.