321.4  Rules.
  The commissioner of public safety is authorized to adopt and promulgate administrative rules governing procedures as may be necessary to carry out the provisions of this chapter; and to carry out any other laws the enforcement of which is vested in the department of public safety.
[C24, 27, 31, 35, §5004; C39, §5000.04; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §321.4]