Indeed.cygnet said:Having been down it a few times, I'd say it's not pleasant but bearable on a bike, though there are more interesting routes. On foot: get yourself an OS and check out the off-road footpaths - it seems quite possible to make a much pleasanter (though slightly longer) walk between the two.
So in this example, to drive from A to B, it's easy - just follow the waymarked signs on the well engineered smooth road, which has been helpfully designed by 20th/?21st century highway engineers for your mode of transport.
To cycle from A to B, the options are either to put up with an unpleasant ('but bearable' - at least for confident cyclists) journey or to get a map and work out another route, possibly via F, K, P, X...
To walk from A to B, one would need to get a map first, work out a route using badly maintained footpaths (often inaccessible for mobility impaired people...), and take a route from A to B via F, K, P, X....
Hardly a way to encourage cycling or walking, is it?