Josh......That's a surprisingly difficult question to answer. On the Super Speedways, Daytona and Talladega intentionally wreaking is not the norm and can carry severe penalties. They've tried to outlaw bump drafting but it's impossible to prevent though drivers do try to avoid contact on the turns which is also near impossible. Imagine for a moment 30, sometimes 40 cars two and occasionally three abreast, if the track conditions allow it, only separated bumper to bumper by one or two inches, traveling at 200mph. That is no exaggeration. Now a car near the front of the pack feels the rear of his car get a little loose on the banked turn and has to back off just a fraction. The car directly behind him can't avoid a gentle touch and all hell breaks loose. You now have a car doing a slow spin, scrubbing off speed but still doing probably 180mph and the following pack still traveling at 200mph bumper to bumper have nowhere to go. They can't apportion blame and they don't. It's a credit to the skill of these drivers that they can survive a 500 mile race with only one or two major pile-ups. It used to be much rougher. True story!!! Dale Earnheart a number of years ago got a run on about four or five cars at either Talladega or Daytona, I can't remember which. After nudging his way past four or five cars he piled into Richard Petty. Caused a huge stink. When he was asked about it later he said with a cheeky grin, "I didn't mean to take Richard out he was just in the way when I got there".

. That was at 200mph on a Super Speedway!!!! On the small half mile ovals its quite different. Barging your way to the front, looking for payback if a driver feels he's been turned around intentionally is the norm and accepted as a part of short track racing. Lots of wrecking, sometimes intentional.
A few interesting points. In F1 you have the one move rule, in other words your allowed to make one block. In IRL blocking is totally outlawed. Even if you try a half block you'll be black flagged. In NASCAR blocking is completely legal and happens all the time. It was what trigged that terrible accident we've just seen in the Nationwide race at Daytona. In open wheel racing when lives at at far greater risk I'm against blocking. I personally believe it should be banned in F1 also. If you weren't allowed to block in F1 there would be far more overtaking without the need for DRS. Just my opinion for what it's worth. Hope this helps
Josh.
