Ambulances are used to respond to medical emergencies by the emergency medical services. ... They can rapidly transport paramedics and other responders to the scene, carry equipment for administering emergency care and transport patients to hospital or other definitive care. An ambulance is a vehicle which can transport medical patients to treatment, and in some instances will also provide out of hospital medical care to the patient. Ambulances are used to respond to medical emergencies by the emergency medical services. Importance of Air Ambulance in Emergency. In the field of Emergency Medical Services, time plays a very important role as you need to reach to the patients as early as possible to assist them with immediate care and take them to the nearest hospital, if needed.