Which color indicates a special connection for a combined standpipe and sprinkler system by the FDNY?

The color indicating a special connection for a combined standpipe and sprinkler system, as designated by the FDNY (Fire Department of New York), is yellow. This color coding is used to quickly inform firefighters and emergency responders about the type of systems they are dealing with during an incident.

In urban environments, where buildings may have multiple standpipe and sprinkler systems, the use of specific colors helps streamline operations and ensures that firefighters are aware of the systems available for suppression efforts. The yellow color signifies a combined system, which allows for both sprinkler activation and standpipe access, enabling effective firefighting strategies.

By following this system of color coding, the FDNY enhances safety and efficiency, ensuring that first responders can make informed decisions rapidly when every second counts. This protocol is an essential part of fire safety standards and helps to mitigate confusion during emergencies.