What must be true for police vehicles to display a red and white light?

In Indiana, the use of red and white lights on police vehicles is specifically regulated to indicate certain actions or statuses of law enforcement. When a police vehicle displays a red and white light, it is typically utilized to signal that the vehicle is in pursuit of a violator. This visual cue assists in conveying urgency and alerts other drivers to the presence of law enforcement actively engaged in a pursuit scenario.

This choice aligns with traffic laws that govern emergency vehicle lighting. When police vehicles are in pursuit, they have the authority to operate under emergency conditions, which includes the use of these specific light colors to ensure public safety and compliance on the road.

The other options do not accurately reflect the regulatory framework governing the use of police lights. For instance, displaying the lights while stationary or parked does not carry the same implications or requirements as being actively in pursuit. Additionally, there are no unrestricted permissions for displaying these lights without the context of an active law enforcement procedure. Likewise, the requirement for a permit to display such lights is not standard in this context, as emergency vehicles are already granted specific privileges under state law when engaged in official duties.