Sec. 3. The department may require to be made ocular or instrumental surveys or reports and examinations, as may be deemed expedient, and the department shall carefully examine and consider the files, reports, and surveys of each of said highway crossings in this state, with reference to:
(1) separation of the grade, the purpose being to separate as rapidly as practicable grade crossings in this state; and
(2) a better location and consolidation of the crossings, the purpose being to have all crossings at right angles if possible.