A quirk resulting from this is that New Orleanians refer to medians as "neutral grounds," as there was a median separating the american sector from the french quarter where trade between the two occured(this is now canal st.).
Isn't "neutral ground" for "median" a British usage?
I'm British and I didn't recognise either term. I had to head for Wikipedia to translate to British English ("central reservation").
I was wrong. My thinking seems to have been "I've seen that before; the British have a different term; ergo it's British." In fact, "neutral ground" was familiar from Walker Percy's novel The Moviegoer, which is set in New Orleans.