Final answer:
Forward facing emergency lights should be turned off when units are working incidents C. When police are on scene.
Step-by-step explanation:
Forward facing emergency lights should be turned off when units are working incidents C. When police are on scene. They should be turned off when police are on scene to prevent confusion and provide a clear visual for law enforcement. It is important to follow this protocol to ensure the safety of everyone involved and to maintain effective communication on the scene.