What's it like living close to a busy road?

My wife and I are considering buying a lovely house in a dream location. We're completely sold on the house itself, but it backs out onto a busy 30mph road & we're trying to work out how much of a drawback that is and whether it's a big enough deal for us not to offer. As it stands, it's the only thing preventing us

Does anyone have experience living in similar circumstances? Do you just tune the noise out eventually? Any lasting pollution effects (am off to read any studies on this too as we have small children)? Anything you'd recommend we'd know in advance? Or any tips you'd give us

Many thanks