Stringsinger, It is generally considered manslaughter,and only if the drunk driver kills someone.
logically there is no difference between someone killing a person,while driving under the influence of drink,or under the influence of drugs,or while being perfectly sober or drug free,but either using their mobile phone,playing a tin whistle,or just driving like a maniac[too much tetesterone]
   a life has still been taken.,through someones dangerous driving.
even if every drunk driver was removed from the road[which they should be],there would still be too many fatalities as the result of drivers driving too fast through speed limits,overtaking on dangerous bends,driving while talking into hand held mobile phones,driving while too tired,driving too fast in fog,driving while racing other boy racers or just driving like maniacs.
please explain why a drunk driver[who kills] should be penalised more heavily than a driver who kills but is perfectly sober,but is driving very dangerously[eg mobile phone,]overtaking on a blind bend.,boy racing,none of them are giving any considerastion to other drivers,or pedestrians.
drink driving does have to be eliminated,but so does excess speed.and driving with hand held mobiles.
quite frankly,as I walk back from my pub my life is in greater danger,not from the driver who is driving at 30 miles per hour who has had two pints,but from a perfectly sober boy racer driving at 60 mph,or a person driving at 45 miles per hour conducting a conversation on a hand held mobile phone.