Two things that would likely cut down wrecks dramatically, especially at super speedways like Daytona and Talledega:
1) No bump drafting or pushing the car in front of you. Other than incidental contact, if your bumper makes contact with the car in front of you and race officials deem it was an attempt to gain an advantage, a drive-through penalty will be assessed. If it happens during the last lap of a race, violators will be penalized ten finishing positions. This rule will apply to all racetracks on the NASCAR circuit. Once drivers get used to the idea of no bump drafting or pushing, violations will be few and far between.
2) No blocking. I hate blocking because it limits passing, and in my opinion passing is the most exciting part of racing. Under the no blocking rule, if a car pulls out in an obvious attempt to pass another car, the car being passed must hold their lane position. Any attempt by the car being passed to hinder the passing car will result in a drive-through penalty. If it happens during the last lap of a race, violators will be penalized ten finishing positions. This rule will apply to all racetracks on the NASCAR circuit. Once drivers get used to the idea of no blocking or pushing, violations will be few and far between.
Drivers should be reminded that it's the fans that make NASCAR racing possible, and the more passing that goes on during races the more exciting the NASCAR product will be, which will in turn draw more fans, which is good for the sport. Drivers should also be reminded that what goes around comes around, and that while the no blocking rule might at times cause them to lose positions or maybe even a race win, there will be other times that the no blocking rule will work to their advantage and cause them to gain positions and maybe even a race win. It all evens out in the end.