Mississippi Code Title 41. Public Health § 41-59-85

(1) The driver of any vehicle other than an official emergency vehicle shall not follow any moving ambulance that is engaged in an emergency medical call closer than five hundred (500) feet, or park the vehicle within two hundred (200) feet of where the ambulance has stopped and a patient is either being loaded or unloaded.

(2) Every ambulance and special use EMS vehicle shall be marked with red lights front and back and also may be marked with white and amber lights in addition to red lights.

(3) Drivers of ambulances and special use EMS vehicles shall operate in the emergency mode with warning lights and siren at all times while engaged in an emergency medical call and operating the emergency vehicle in a manner to take exceptions to the traffic laws and regulations as provided in Section 63-3-1 et seq., so as to warn other drivers of nonemergency vehicles to yield the right-of-way of the authorized emergency vehicle. Ambulances and special use EMS vehicles may use emergency warning lights only if they are engaged in an emergency medical call and they are stopped or parked, or if they are moving and operating the vehicle in a manner so as to abide by all traffic laws and regulations as provided in Section 63-3-1 et seq. No driver of any ambulance or special use EMS vehicle shall assume any special privilege from traffic laws and regulations except when the emergency vehicle is operated in the emergency mode, with warning lights and siren, while engaged in an emergency medical call.