There was at least one off per session, usually due to cold tyres. Most sessions where allowed to continue if it was deemed to be safe. Only a handfull where red flagged. On a couple of occasions, one which I had seen for myself, a rider had come straight out of the pit lane and then binned it at redgate
It was really cold on fri about 9 -10 degrees but felt more like -2 with the wind chill factor. If I hadn't got so cold in the afternoon and stayed for my last session, I think I might have had the track all to myself.
