Rule 30. Each vehicle licensed and the horses used to draw the vehicle shall be subject to inspection by the commission or its authorized agent at any time within the discretion of the commission. Inspection shall be made for the purpose of assuring safely constructed vehicles and properly conditioned horses. The commission shall prohibit the use of any vehicle which, in its judgment, is unsafe and any horses which, in its judgment or the judgment of its duly authorized agent, are not properly safe and conditioned for the work for which the horses are being used.
Mich. Admin. Code R. 318.130