At least five (5) regular members and two (2) alternate members of the commission shall reside within the City of Lake Wales. The regular members shall be appointed for terms of three (3) years, except that the initial terms of the members shall be staggered so as to provide two (2) vacancies at the end of the initial first year, two (2) vacancies at the end of the initial second year, and one (1) vacancy at the end of the initial third year. The alternate members shall be appointed for terms of three (3) years, except that the initial terms of the members shall be staggered so as to provide one (1) vacancy at the end of the initial first year, one (1) vacancy at the end of the initial second year, and one (1) vacancy at the end of the initial third year. Alternate members shall serve on a rotational basis when regular members are unavailable. Terms of office of such members shall begin on the first day of July in each year. The regular members shall elect a chairperson and such other officers as it deems necessary at its first meeting after the first day of July in each year. Members of the commission shall be appointed on the basis of a demonstrated interest and/or expertise in bicycle/pedestrian safety to the greatest extent possible.