Except as provided in §B of this regulation, a person may not operate a motor vehicle without leaving enough space so that an overtaking vehicle may enter and occupy the space between the trucks unless the driver is in receipt of written approval from the Administration. A person may apply to the Administration for written approval for the operation of trucks in an electronically unified manner in conformity with Transportation Article, §21-310(f), Annotated Code of Maryland, and with this chapter. The applicant shall certify to the Administration that the trucks will be operated in conformity with this chapter and related policies or procedures established by the Administration. The driver shall carry copies of the written approval while operating the truck in a unified manner in accordance with this chapter.