Missouri Vehicles Permitted to Use Emergency Vehicle Lights
304.022 (1)(4)
1. Upon the immediate approach of an emergency vehicle giving audible signal by siren or while having at least one lighted lamp exhibiting red light visible under normal atmospheric conditions from a distance of five hundred feet to the front of such vehicle or a flashing blue light authorized by section 307.175, RSMo, the driver of every other vehicle shall yield the right-of-way and shall immediately drive to a position parallel to, and as far as possible to the right of, the traveled portion of the highway and thereupon stop and remain in such position until such emergency vehicle has passed, except when otherwise directed by a police or traffic officer.
4. An "emergency vehicle" is a vehicle of any of the following types:
(1) A vehicle operated by the state highway patrol, the state water patrol, the Missouri capitol police, or a state park ranger, those vehicles operated by enforcement personnel of the state highways and transportation commission, police or fire department, sheriff, constable or deputy sheriff, federal law enforcement officer authorized to carry firearms and to make arrests for violations of the laws of the United States, traffic officer or coroner or by a privately owned emergency vehicle company;
(2) A vehicle operated as an ambulance or operated commercially for the purpose of transporting emergency medical supplies or organs;
(3) Any vehicle qualifying as an emergency vehicle pursuant to section 307.175, RSMo;
(4) Any wrecker, or tow truck or a vehicle owned and operated by a public utility or public service corporation while performing emergency service;
(5) Any vehicle transporting equipment designed to extricate human beings from the wreckage of a motor vehicle;
(6) Any vehicle designated to perform emergency functions for a civil defense or emergency management agency established pursuant to the provisions of chapter 44, RSMo;
(7) Any vehicle operated by an authorized employee of the department of corrections who, as part of the employee's official duties, is responding to a riot, disturbance, hostage incident, escape or other critical situation where there is the threat of serious physical injury or death, responding to mutual aid call from another criminal justice agency, or in accompanying an ambulance which is transporting an offender to a medical facility;
(8) Any vehicle designated to perform hazardous substance emergency functions established pursuant to the provisions of sections 260.500 to 260.550, RSMo.
307.175
Motor vehicles and equipment which are operated by any member of an organized fire department, ambulance association, or rescue squad, whether paid or volunteer, may be operated on streets and highways in this state as an emergency vehicle under the provisions of section 304.022, RSMo, while responding to a fire call or ambulance call or at the scene of a fire call or ambulance call and while using or sounding a warning siren and using or displaying thereon fixed, flashing or rotating blue lights, but sirens and blue lights shall be used only in bona fide emergencies. Permits for the operation of such vehicles equipped with sirens or blue lights shall be in writing and shall be issued and may be revoked by the chief of an organized fire department, organized ambulance association, or rescue squad and no person shall use or display a siren or blue lights on a motor vehicle, fire, ambulance, or rescue equipment without a valid permit authorizing the use. A** permit to use a siren or lights as heretofore set out does not relieve the operator of the vehicle so equipped with complying with all other traffic laws and regulations. Violation of this section constitutes a class A misdemeanor.