When I worked for "We don't break the rules, we just bend them" Railfreight, I got an email about a 50mph BSR because of high winds which said it would end at 2100hrs. So I took my train out at 21:30 hrs and off I went at full speed 60mph, crossed on to Cambridge Box to get a radio call saying the BSR was still on as "we've still got trees coming down". I called control to suggest they get an email out,which took them over an hour.
Now I work for God's Own Liner, we get BSRs and other stuff by Text and when booking on, so it's not beyond the wit of man to write it down and put it somewhere sensible when driving along.
Re the comment about Late notice boards being cluttered with stuff months old: when I was on the payroll at the prestige project in London, their Notice boards had three month old stuff in them.