Without being too controversial, could this situation have been avoided? I know it's easy for me to type this without actually being there and knowing the factors that would affect your decision so this all just an analytical breakdown of the video. Could a bit of defensive riding have saved his bike? I don't condone what the driver did after the collision and as captf has already mentioned, the blind spots definitely didn't help the situation. Also, the way the driver reacted to the whole thing might just be the fact that he is in shock, but again, not the point I'm trying to make here.
It's obvious that a vehicle of that size is going to have a larger turning circle and has been stated in the Highway Code (221).
I know the illustration isn't the same as the road layout in the video but what it's trying to show is clear. The truck will, more often than not, crossover into oncoming traffic and drivers are advised to stop and wait if it needs room, which the rider clearly did.
Around the three second mark, you can see through the metal railing that the truck has been indicating before approaching the road, obviously very difficult for the rider to notice so this was just to make sure the driver was properly indicating. I think the five second mark is crucial, not sure what rider was trying to look at, hopefully it was just an early shoulder check and not checking out the girl that walked by. I'm just guessing here but it's crucial because I don't think the rider noticed the indicator at this point and in turn, didn't realise the driver's intentions. First point I'll make is, had he focused on the road ahead, would there have been enough time for him to stop sooner, knowing the driver was already milking the extra room needed? Not putting this entirely on the rider because I think the driver should have waited for the buses/traffic to clear to get a better turning circle.
Around six seconds, the driver can't see the rider and he showed no sign of stopping, rider is unaware. Around seven seconds, the rider realises this and let's say the shock of it prevents movement but still able to shout a warning. Around nine seconds the rider is able to save himself by using the crash momentum to roll off. I believe the rider was still in gear at this point because I couldn't hear any clutch noises coming up to incident and the engine seems to rev up and stall when he came off. Second point, around the time the rider realises the driver wasn't stopping (which is around seven seconds), was there enough time for him to ride across to the other lane? He did his shoulder check so should know the lane is clear from behind/sides and nothing is coming from the front on that lane. This really depends if he was in gear, if not, then the odds are higher. I know this opens the rider up to a whole lot of legal issues if moving over develops into something more. It may even be more dangerous if the rider didn't position himself in a safe place after moving as the driver still wouldn't be able to see him so potential to be caught by the rear wheels as the truck was always going to end up back on the right lane after some time anyway.