What is the term used for a signal indicating that officers are responding to an emergency situation?

The term "En Route" is commonly used in law enforcement communications to indicate that officers are on their way to an emergency situation. This phrase effectively communicates to dispatch and other teams that officers have received the call and are actively responding, which is crucial during emergencies. It helps to coordinate additional resources and informs other units of the officer's movement and status. Using concise and standardized terminology like "En Route" ensures clarity and efficiency in emergency responses, which is vital for maintaining public safety and effective communication among law enforcement personnel.