NASCAR added a rule Friday ordering drivers to not approach the track or moving cars after accidents. If a car is involved in an accident and can no longer keep going - and no extenuating circumstances exist such as smoke in the cockpit or fire - the driver should not loosen any personal safety equipment until directed to do so by safety personnel or a NASCAR or track official. ''Really, we're formalizing rules that have been there,'' Robin Pemberton, NASCAR's vice president of competition and racing development, said at Michigan International Speedway. We're just formalizing this and it's something that we worked on this week.'' The rule takes effect immediately and applies to all of NASCAR's series. More...