In my track day experiences, I have ridden with 3 different organizations and what I have found is that your experience is directly linked to how dedicated your control riders are to the program. Some CR's just want free track time. Some really want to help. I personally feel its a toss up on whats "Safer" from street to track. The track, I don't have to worry about gravel and debris for the most part. I don't have to worry about cars pulling out, or even how fast I am going. Its just me and the bike. I ride much harder on the track, than I do the street.This has its own risks, but some of the additional risks of the track are gone. I'm much slower on the street but I always try to leave room for error because of gravel, or horse poop, or whatever it may be. I feel much more comfortable going fast on the track, than I do the street. If you do crash on the track, you generally get spit off the line and out of the way, and you can slide to a stop. On the street you may find a Mac truck in your path, that will stop you. As I said, In my mind, its a toss up.