Pub. L. 91-566, tit. V, sec. 501

Sec. 501. Within the unit limit of cost fixed by law, appropriations and authorizations made for the Department under this Act shall be available for the purchase, in addition to those specifically provided for, of not to exceed six hundred and sixty-two (662) passenger motor vehicles, of which four hundred and fifty-six (456) shall be for replacement only, and for the hire of such vehicles.