Whatever. I'm arguing for removing all doubt. Breathalyse yourself in the morning, if you have alcohol in your bloodstream, you're on the bus. Simple. I shouldn't worry though. It'll never happen and I cannot be arsed to get into one of your long drawn out breakdowns of every word of everyone's...
Well, you wouldn't would you, because you'd know if you get pulled over and are over the limit, you get done. So you get the bus to work. It's a very common thing for people to still be over the limit the next day. Even if you are under the limit, driving with a hangover is very dangerous too.
Shoule be zero %. Cuts out any ambiguity then. Can I get away with one more pint? I did last time....
Zero % would not stop it all together but would leave people in no doubt that NO, it is NOT okay to drive.
I can never really understand why people want to have one drink and then go driving...