He's never had a serious accident and has had a couple of pints many times before. He also would never have a third. As another person said, being elderly, poor eye sight ect can be more dangerous. The law of 35mg in the blood is because the experts believe it is safe for people to drive with...
just stating the laws that are here now. My brother was breathalysed coming out of a pub after drinking 2 pints of Stella. He was in the amber but passed.
I have driven after having 2 pints of lager, as that's roughly what your allowed before going over the limit. Never thought my driving was affected, but would never drive with any extra.
Many country pubs would close down if you took these type of customers away.