This is most common at night. Another situation may be if the siren begins to stress out the patient inside the ambulance. If a patient reacts negatively to the noise, shutting it off may soothe them.

DALLAS — Three people were injured, one critically in a crash involving a Dallas Fire Rescue ambulance and a car after the ...

Several people were taken to area hospitals Tuesday night after an SUV collided with a Chicago Fire Department ambulance at an intersection in the McKinley Park neighborhood, Chicago police said.