(a) Whenever the commissioner shall refuse to issue a license certificate, or shall suspend or revoke a license certificate, or shall suspend the right of a dealer to issue temporary plates or markers under the provisions of section fifteen of this article, or shall suspend a dealer special plate or plates, he shall make and enter an order to that effect and shall cause a copy of such order to be served in person or by certified mail, return receipt requested, on the applicant or licensee, as the case may be.

(b) Whenever a license certificate is suspended or revoked, the commissioner shall in the order of suspension or revocation direct the licensee to return to the department his license certificate and any special dealer plates and temporary registration plates or markers issued in conjunction with the issuance of such license certificate or such business, which temporary registration plates or markers are still in the licensee's possession. Whenever the right of a dealer to issue temporary registration plates or markers is suspended or a dealer special plate or plates are suspended as aforesaid, the commissioner shall in the order of suspension direct the licensee to return to the department all temporary registration plates or markers issued in conjunction with such business and still in the licensee's possession or such dealer special plate or plates. It shall be the duty of the licensee to comply with any such order following expiration of the period provided in section twenty-one of this article for an appeal to the license certificate appeal board (created in section twenty of this article) without an appeal to such board having been timely perfected, and immediately if a license certificate were suspended in accordance with the provisions of subsection (b), section eighteen of this article. Whenever a licensee shall fail or refuse to comply with any such order as herein specified, the commissioner shall proceed as provided in section seven, article nine of this chapter.