After the initiation of an enforcement proceeding, communications between persons outside the agency and agency decisional personnel should occur on the record. Consistent with applicable regulations and procedures, if oral, written, or electronic ex parte communications occur, they should be placed on the record as soon as practicable. Notice should be given to the parties that such communications are being placed into the record. When performing departmental functions, all DOT employees should properly identify themselves as employees of the Department, including the OA or component of OST in which they work; they should properly show official identification if the contact is made in person; and they should clearly state the nature of their business and the reasons for the contact. All contacts by DOT personnel with the public shall be professional, fair, honest, direct, and consistent with all applicable ethical standards.