(a)
1. The driver of an authorized emergency vehicle, when responding to an emergency call, when in the pursuit of an actual or suspected violator of the law, or when responding to a fire alarm, but not upon returning from a fire;
2. A medical staff physician or technician of a medical facility licensed by the state when responding to an emergency in the line of duty in his or her privately owned vehicle, using red lights as authorized in s.
316.2398; or
3. The driver of an authorized law enforcement vehicle, when conducting a nonemergency escort, to warn the public of an approaching motorcade;
may exercise the privileges set forth in this section, but subject to the conditions herein stated.