No member or alternate of the commission or member of a committee established by the commission who is a nonmember of the commission shall receive a salary. Each member of the commission and each alternate serving in place of a member, except nonvoting members who are officers or employees of a public agency, and each member of a committee established by the commission who is a nonmember of the commission, may receive reasonable and necessary traveling expenses and meal allowances as approved by the commission for each day spent in actual attendance at, or in traveling to and from, meetings of the commission or committees of the commission, or on special assignment for the commission.