Is a Department vehicle that is standing in a line of traffic in response to an officer's signal properly parked?

A Department vehicle that is standing in a line of traffic in response to an officer's signal is considered properly parked because it is actively engaged in law enforcement duties. When officers use their vehicles as part of traffic control or to facilitate their response to incidents, the vehicle's position becomes important for ensuring safety and order on the road.

In this scenario, the vehicle is acting under the authority of the officer's signal, which justifies its presence in the traffic line. This is a common practice for emergency vehicles, as they may need to stop in traffic for various reasons such as directing traffic, responding to accidents, or performing stops. The positioning of the vehicle plays a crucial role in not just enforcing the law but also in maintaining the safety of the officers and the motoring public.

The other options would imply circumstances that are either situationally ambiguous or unnecessarily restrictive regarding the vehicle’s role while responding to an officer’s signal. In contrast, recognizing the vehicle as properly parked aligns with the operational protocols of law enforcement in managing traffic and ensuring public safety.