A non-rules question froma Brit!

[mqstout]

Yes, there definitely are such towns. Well, they tend to be hamlets more than towns, but they exist. I doubt they're quite as common as the medias and arts would like to portray, but it's still a great plot device.

For one example, check out the Florida Keys (http://maps.google.com/maps?q=key+west). Until the terminal island in the chain towards the mainland, they're definitely "one road" towns. It's an island chain, though, and I'm certain countless more islands can be found on the US eastern coast and in the Great Lakes (http://maps.google.com/maps?q=wellesley%20island) like that.

The perfect, classic example would be Angle Inlet in the far north of Minnesota. Not only is it a one road in and out of town kind of place -- but that one road is a border crossing to Canada! (You cannot get to Angle Inlet by road without going, briefly, through Canada). http://en.wikipedia.org/wiki/Northwest_Angle

And my last example (where my boyfriend's family lives) is a small section of a small city that is separated from the rest by steep cliffs and, again, has limited traffic flow. http://maps.google.com/maps?f=q&hl=en&ge...9&t=p&z=15

EDIT: And I hadn't even considered to look in Alaska for such places. There are some there so remote, they're boat, plane, or cross-country only! It only took me a moment to find one there: http://maps.google.com/maps?q=dillingham%20alaska