(1) It is the responsibility of the sign owner to see that the proper permit is continuously attached to the sign or device for which it was issued.

(2) The permit plate shall be attached to the sign or the supporting structure near the lower left corner of the sign (or supporting pole/beam) facing the traffic. The permit plate must be visible from the roadway.

(3) Permits which are affixed to the wrong sign or are otherwise in violation of requirements may be canceled by the department if the deficiency continues for more than 30 days.

(4) If the department cancels a permit, the sign for which the permit was issued becomes an illegal sign and must be removed.

(5) If the original permit plate has been lost or destroyed, a substitute permit plate may be obtained from the department upon payment of a $20.00 fee.