Yes
faster than a car
It depends on the exact nature of the specific emergency! If someone has been injured then you should contact the ambulance service. If someone has been trapped then you will require the fire and...
In Ireland the Emergency was the name given to World War II. During that time Eamon De Valera was Taoiseach.
It is up to the final judgment of the individual making the decision. Not ALL things that are called emergencies are GENUINE emergencies.