Holy Shit! That's horrible!
BUT - they only showed really dumb-ass idiot riding.
Apart from dumb-ass riding, the most dangerous thing about riding a motorbike is incompetent car/van drivers.
I did a 200 mile bike trip yesterday (not on the RE) and yet again confirmed my certainty that
at least (this is a very conservative estimate) fifty percent of drivers are incompetent and just should not be behind a wheel. Fearful, confused, inadequately trained, poor to non-existent judgement of speed & distance, dangerously slow reaction times, ignorance of the most basic traffic rules, particularly at junctions and most particularly at roundabouts, and plain inattention to anything other than the next twenty yards of road - less if they happen to be on the phone, checking their hair in the mirror, or reading!
And this isn't including the out & out reckless idiot bastards who just don't give a shit about the rules or anyone else on the road. They've always been there, and watch out!
But these others, more & more joining all the time, are way more dangerous in my opinion. They get in a car, and they think everyone else on the road will make allowances for their incompetence.
Not everyone is suited to driving. Everyone's allowed to do it with the most minimal and insufficient training.
Ride like you're among unpredictable half-wits with weapons who want you dead. You wont be far from the truth.
Rant over....
sorry to hi-jack, Andy - one of those moments ....
and thanks for the link - painful to watch, but it's as well to get these reminders....