Driving past our local Police Station today I noted that - overnight a road sign appeared - a 30 mph speed limit has been placed just prior to the exit and on that side of the road only. However, travelling in the oppsoite direction the speed limit is unchanged!!! It still stands at 40 mph. I always thought it was impossible without an act of Parliament for speed restrictions on roads to be changed, or am I wrong. AND what is the correct limit on this particular stretch of road. Is your guess as good as mine? Has this been placed there without permission? All seems a bit dodgy to me!