He pleaded guilty to three counts relating to possession of a firearm disguised as another object and three of possessing a prohibited weapon at Durham Crown Court.
Vehicles will be prohibited from idling their engines for more than three minutes if parked near a school or a hospital, and cars will be subject to random testing for emissions compliance.
Officials overseeing the University of Pennsylvania's Penn Relays said Thursday that guests will be prohibited from bringing backpacks into the stands at the event, which begins next Thursday and lasts three days.