I was at the velodrome today doing an open ride and it was a great workout. A couple things that i wanted to comment on were the number of riders doing the open ride and the large discrepancy in abilities.
The track is not that big and there were I think 12 people on the track. There were not any accidents but 12 riders is alot. I think they should limit the number of riders that do an open ride.
I also thought there was a huge range of riding abilities. I would say half the riders were P-1-2 riders then a handful of 3s then a handful of 4s. It makes things a little dangerous with the wide variety of abilities.