[73LeMans]

The short answer, as has been said, is yes. The check for safety at tracks is constant, (at least @ NED it is) and inline with whatever time your car runs, regardless if its a "street" car or a "race" car

I'm not one for being over regulated, and don't like authority any more than the next guy, but I have to disagree with the statement that roll bar, or any other safety gear makes any person or vehicle LESS safe to drive around on the street. If its all done properly and you know how to operate it (5pt harness for instance) it all works to protect you.