Case in point today - heading out to photograph a train, came to a road closed ahead sign, no further information but on the "main" road to where I was heading, decided to try it as I could turn off at several points and use tiny lanes to get to my destination, or an alternate destination if push came to shove. 5 miles later I turned off the road, on my planned route and got to my place of choice, having passed several more road closed signs with make a u-turn for diversion signs. Having checked since the road was actually closed about 1/2 mile further on from where I turned off - but a "road closed in 5.5 miles" sign would have helped, and no doubt some would have taken the diversion and, if they wanted a location in the first 5 miles, been unable to get to their destination. Pretty typical for over here.