The most obvious problem is the sheer number of people who descend on Franklin Street, making parking virtually impossible and posing a potential safety hazard with masses of participants.
Last year, officials tried to resolve the congestion by not permitting cars to be driven inside a 2-mile radius around downtown Chapel Hill.
Chapel Hill Police Department spokeswoman Jane Cousins said that this year officials decided to return to a policy used two years ago that did not block off roadways into town.
Cousins said the town is planning to combat the problem by encouraging people to use park-and-ride lots around town instead of driving. "The town will provide round-trip shuttle buses in hopes of reducing the cars around the area," she said.
She said the town also is aiming for 300 police officers from all over the state to be on duty downtown.
Reaction to last year's policy of closing roadways was generally negative. "It was disruptive," said Chapel Hill Town Council member Mark Kleinschmidt. "You couldn't get through town."
Many students also found the plan inconvenient. "I live in an apartment off campus, so I couldn't get there," said senior Erin Potts. "I would support going back to the policy from two years ago."
Even students on campus were not positive about the policy.
"It was hard for our friends who live off campus," said senior Leigh Jefferson.