321.5  Duty to obey.
  All local officials charged with the administration and enforcement of this chapter shall be governed in their official acts by the rules promulgated by the department.
[C24, 27, 31, 35, §5005; C39, §5000.05; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §321.5]