Which signal shows that a unit is out of service due to equipment failure?

In the context of the Ohio State Highway Patrol communication codes, the signal indicating that a unit is out of service due to equipment failure is designated as Signal 4. This signal is crucial for maintaining situational awareness among officers and dispatch, as it communicates the status of a unit that is unable to perform its duties due to technical issues.

Understanding this signal is vital for ensuring that resources are adequately allocated and that other units are aware of potential gaps in coverage. If a unit reports as out of service, it allows the command structure to respond appropriately by potentially reallocating units to fill in the areas of responsibility that the affected unit can no longer cover.