Except as otherwise provided in this Code:
voluntary firefighter;
paid firefighter;
part-paid firefighter;
call firefighter;
member of the board of trustees of a fire protection district;
paid or unpaid member of a rescue squad;
paid or unpaid member of a voluntary ambulance unit; or
paid or unpaid members of a local or county emergency management services agency as defined in the Illinois Emergency Management Agency Act, designated or authorized by local authorities, in writing, and carrying that designation or authorization in the vehicle.
However, such lights are not to be lighted except when responding to a bona fide emergency or when parked or stationary at the scene of a fire, rescue call, ambulance call, or motor vehicle crash.
Any person using these lights in accordance with this subdivision (c)1 must carry on his or her person an identification card or letter identifying the bona fide member of a fire department, fire protection district, rescue squad, ambulance unit, or emergency management services agency that owns or operates that vehicle. The card or letter must include:
625 ILCS 5/12-215