Yes good and all, but I constantly get irritated by the drawings showing an advised line through a corner. They show an upright rider before the bend and then a dotted line throught it, leaving only enough space for an upright rider not to have not only his head but alot besides taking a head on.
Depending on your speed and the width of the road you will often have to keep your tyres on the near side to keep your head from getting anywhere near the centre line. I'm just over 6ft, so when sitting on the bike, I'm still over 5ft and when cornering that could well mean the width of the bike from tyre to lid is easily over 4 if not near 5 ft.
Even the IAM and Police Roadcraft book uses these single lines. I think there should be a number of examples showing the zone on the road the bike occupies at different speeds and whether there is/isn't oncoming traffic and good visibility. I have often had to keep my tyres on the near side almost the whole way through the corner and they only move out towards the centre of the road as I straighten up, they effectively move back underneath me. So what you have is a line for your head and a line for your tyres.
Now OBVIOUSLY we all know this but I just wanted to vent a bit. The frustrating thing is to think that some newbie will look at these drawings and head off onto the A and B road and come a croppa at the first unsighted bend with a transit coming the other way. I mean that if you look at their decapitation example and take the line as that for the tyres and a quick corner speed, you are not talking about a head off, but a full on collision.
On the plus side, they had a facts section and noted that Blackbird riders have an accident once every ten years - sounds a good basis for a poll.
bishbosh.