(2)   Exempt Provisions.
Digital display accessory signs that comply with the provisions of subsection (3) below shall be permitted and shall not be required to comply with the following provisions of this Zoning Code:
(a)   Any sign controls set forth in Chapter 14-400 (applicable to base zoning districts) or Chapter 14-500 (applicable to overlay zoning districts).
(b)   § 14-904 (Accessory Sign Controls).