The state board of agriculture may employ for the center, and may assign thereto, such professors, instructors, tutors, demonstrators and such other persons as from time to time may be considered necessary and may furnish all necessary apparatus and appliances for research and the study of highway traffic safety problems and for the teaching of courses related thereto, including extension courses and demonstrations, and may prescribe and regulate the courses offered and may make such rules and regulations for the operation of the center as may be necessary.