49 shall whitewash its rooms for sanitation purposes and shall maintain them in a proper sanitary condition in the future. Toilets at the Police Station in Rakovica used by persons remanded in custody should be refurbished and maintained in a sanitary condition. The Police Station in Vračar shall improve natural and artificial lighting of its custody cells to make them sufficiently lit and safe for reading without causing visual impairments and shall provide sufficient inflow of fresh air. The Police Station in Vračar shall install buttons for alarming the police officer on duty in its custody cells. The Police Station in Voždovac shall undertake appropriate measures to ensure its custody cells are sufficiently lit and aired. The Police Station in Voždovac shall install heating in its custody cells. The Police Station in Voždovac shall install buttons for alarming the police officer on duty in its custody cells. The existing custody cells in the Police Station in Barajevo shall no longer be used for holding persons in custody. The Police Station in Barajevo shall provide custody cells which are compliant with the applicable standards. The Police Station in Obrenovac shall undertake appropriate measures to ensure that custody cells have sufficient natural and artificial lighting and that they are well-aired and heated. The Police Station in Obrenovac shall whitewash its rooms for sanitation purposes and shall maintain them in a proper sanitary condition in the future. The Police Station in Obrenovac shall install buttons for alarming the police officer on duty in its custody cells. The rooms used for interrogation should be emptied of all items that are not part of standard office supplies. The Police Administration of the City of Belgrade shall undertake appropriate measures and provide a designated area where persons remanded in custody could spend some time in fresh air. The Police Administration of the City of Belgrade and the police stations it comprises shall improve the fire protection system by visibly placing an evacuation plan and instructions for action in the event of a fire in every police station, with the aim of protecting the physical integrity of persons remanded in custody. The Police Administration of the City of Belgrade and the police stations it comprises shall arrange for and implement appropriate first aid training for police officers and shall equip the premises with the required first aid kits. I/I–2 Juvenile Correctional Facility in Valjevo129: At the Juvenile Correctional Facility in Valjevo, detainees with no prior convictions shall not be placed in the same rooms/dormitories with those who have prior convictions and special care 129 Report of the Visit to the Juvenile Correctional Facility in Valjevo, 71-40/13.