(a) All Town ordinances, except as specified in section 110 of this charter, may be repealed by vote of the Town as follows: A petition signed by not less than 10 percent of the registered voters shall be filed with the Town Clerk requesting a vote on the question of repealing the ordinance. The selectmen shall call a special Town meeting to be held within 60 days of the date of filing the petition, to vote on whether the ordinance shall be repealed. The ordinance shall be repealed only if at least 15 percent of the registered voters vote and a majority of that number vote for repeal.

(b) Within 40 days after passage of an ordinance, five percent of the registered voters shall constitute sufficient signatures for a referendum petition, and all other procedures of subsection (a) of this section shall apply.