Call 911 when the condition is time-critical or moving the person is dangerous: heart attacks (the ambulance starts treatment in your driveway), strokes (the CDC: every minute counts - paramedics alert the hospital so the team is waiting), severe breathing trouble, uncontrolled bleeding, unconsciousness, seizures, severe allergic reactions, overdoses, choking, and neck or back injuries.
The ambulance is a rolling treatment room - oxygen, cardiac drugs, IVs - plus traffic priority and faster triage on arrival. Drive for the stable and minor: simple fractures, stitchable cuts that are not pumping, fevers, ear infections. Two honest exceptions: rural areas where a fast private car beats a distant ambulance (someone else drives), and never drive yourself with dangerous symptoms. Pymander is a free AI doctor, 24/7 by text, for the borderline calls.
What to do
Common questions
When should I call 911 instead of driving to the ER?
The rule: call 911 when the condition is time-critical or moving the person is dangerous; drive when it is neither. Call 911 for: heart attack symptoms (chest pain or pressure, sweating, pain spreading to arm or jaw - MedlinePlus is blunt that sooner treatment saves heart muscle, and the ambulance starts that treatment in your driveway), stroke symptoms (the CDC's message is 'every minute counts' - paramedics alert the hospital so the stroke team is waiting), severe trouble breathing, uncontrolled bleeding, loss of consciousness, seizures, severe allergic reactions, overdoses, choking, and injuries where movement could worsen damage - neck, back, or a bad fall. The ambulance is not a taxi with lights: it is a rolling treatment room - oxygen, cardiac drugs, IVs, defibrillation - plus the legal ability to skip traffic, plus triage on arrival (ambulance patients often skip the waiting room). Drive (or be driven) for: minor fractures and sprains, cuts that need stitches but are not pumping blood, fevers in older kids and adults, ear infections, and most everything urgent-care level. Two honest exceptions: in rural areas where the ambulance is far, a fast private car can beat it - but someone else drives while you monitor the patient; and never drive yourself if you are the one with the dangerous symptoms. Pymander is a free AI doctor, 24/7 by text, for the borderline calls.