Comment by bluGill

We are talking about ER rooms here: people who need ER services are not in a position to do any sort of shopping around. When seconds count you cannot afford the minutes needed to get to the next ER. In theory it is possible that one is significantly better and so it would be worth the time, but in practice all the ERs in any given area are going to be not very different in ability to provide care. Even if the closer ER transfers you to the other getting to the first in time started care sooner.