What must be removed from a vehicle according to CVC 27002 unless it is an authorized emergency vehicle?

The requirement under California Vehicle Code (CVC) 27002 emphasizes that certain sound-emitting devices like sirens and air horns should be removed from vehicles unless those vehicles are classified as authorized emergency vehicles. This regulation is in place to prevent confusion and maintain the integrity of emergency responses. Unauthorized vehicles using such devices may mislead the public or create unsafe conditions, as these tools are specifically intended for use by emergency responders to signal their presence, clear traffic, or alert the public in urgent situations.

The other options, while potentially relevant to vehicle regulations, do not pertain to the specific requirement laid out in CVC 27002. License plates are a mandatory component for all vehicles without exception, security stickers are not regulated in the same manner, and emergency flares are typically carried for safety but are not required to be removed from non-emergency vehicles like sirens and air horns are. Thus, the focus on sirens and air horns being removed unless designated as emergency vehicles is central to maintaining clear communication in emergency situations.