The new section of HUDSON RIVER PARK in the Village is beautiful, but park police enforce the rules selectively. A cyclist who didn't yet know certain areas are off-limits got an expensive ticket, but I've never seen pedestrians flagged for walking on the bike path. When this Village resident went to check out the playground pier, she was told that unaccompanied adults are not allowed. "Pedophiles," said the park policeman, pointing to the list of rules. Surely he was not referring to me? The rules also indicate no food, but kids and caretakers snacked like mad. Is it legal to forbid someone to walk on a pier in a public park?