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The nature of the call is an aggravating factor when deciding when to use them. The use of lights and sirens is up to the individual police officer driving to the call. ( January 2010) ( Learn how and when to remove this template message) Unsourced material may be challenged and removed. Please help improve this section by adding citations to reliable sources. NIMS also strongly encourages the use of plain language for internal use within a single agency. the National Incident Management System (NIMS) states "it is required that plain language be used for multi-agency, multi-jurisdiction and multi-discipline events, such as major disasters and exercises" and federal grants became contingent on this beginning fiscal year 2006.
CODE ZERO POLICE CODE
The term downgrade may be used in the opposite situation.Ī similar variation is to "reduce" or "increase code." For example, if there is a code 3 response to a situation, but the first units on scene have sufficient control of the situation, they may announce over the radio that responding units may "reduce code." In this example, to "reduce code" would mean to continue responding, but at code 2, rather than discontinue altogether to alert units to discontinue altogether- e.g., because the suspect is in custody or there are already enough police officers, also known as “e-r’s” on scene-they would likely say they are "code 4."
CODE ZERO POLICE UPGRADE
If a unit is responding to a call without lights or sirens (code 1), and the unit later needs to turn on lights and sirens (code 3), the term upgrade may be used.
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Some departments may use the terms "upgrade" and "downgrade" as well. Some slang may be used, such as "Running Hot", or "Running Cold".
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An example of this would if a patrol car is close and does not want to alert anyone of their arriving. Code 2 being lights and siren and code 3 would mean the same as code 2 but without lights and siren. In some individual departments they have their own response codes. In some agencies, Code 3 is also called a Hot Response. It is commonly used to mean "use lights and siren". A Code 3 Response in the United States is used to describe a mode of response for an emergency vehicle responding to a call.
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