My brother was run over by a car & killed. Blood alcohol level found to be 282 etc. The sequence of events prior to his being on the road aren't known. eg did he just fall down drunk ? I'm not a frequent or heavy drinker & I can't imagine what it would be like trying to walk after drinking that much.
Trying to fill in gaps a little, although it could only be hypothetical.
As he always drank a lot I would have thought some tolerance would have built up, but 3 1/2 limit ?