On 2016\01\24 11:36, tim..... wrote:

"Offramp" wrote in message
...
On Saturday, 23 January 2016 14:09:49 UTC, Basil Jet wrote:

Although "alternate" is used in America as an, er, alternative to
alternative, here in Britain "alternate route" implies that you should
use one route the first, third and fifth times and use the other the
second, fourth and sixth times.

Yes, very well spotted. You are right.

I got it

but only because I couldn't see anything else wrong and I thought it a
bit picky

Same here. I wouldn't see anything wrong if I saw the sign in real life.
Internet use makes it impossible to keep British English and American
English distinct in my head.