This was how I viewed the possible cause of the accident, AND the passage of the car. It's based only on what I can see in the video, AND the reported comments from witnesses.
It calls for the ice to be present ONLY on the tarmac at the junction - and the notes explain why this might be the case.
I do not think any of the participants could have avoided the accident except by their timing along the road.
The cyclists WERE bunched up, which has increased the casualties above that which might have resulted from Johno's "timed grouping".
Personally I thought bunching was to take advantage of slipstreaming, AND force drivers to pass with clearance, rather than "shave" by as has happened to me when riding alone.
However, I have always felt uncomfortable since the time the Portsmouth branch of the Cycle Touring Club went down a hill as a bunch, and the lead cyclist got his wheel into a tramline, and fifteen or so following riders ran over him as he went down.
Since I formed this diagram, there have been reports that the police had requested that the road be gritted. I would agree with those that feel this was a serious oversight - but I do not know the sequence of events for certain, only the coroners court will finally apportion blame.
