Which of the following is NOT a requirement for a Master Driver Manager?

The correct answer is that certification by the commander is optional. In the context of Army Regulation (AR) 600-55, specific requirements must be met to qualify as a Master Driver Manager. This includes completing the master driver course, achieving a certain rank, and being assigned to designated operational roles.

Certification by the commander is not optional; it is a necessary step in the process of becoming a Master Driver Manager. This requirement ensures that the individual is recognized and authorized to fulfill the responsibilities associated with the position. Thus, having this certification is essential for the validation of the individual's qualifications and adherence to Army standards.

By focusing on the established criteria for this role, it is clear that all specified requirements contribute to the competency and authority needed for a Master Driver Manager, highlighting why the other options are indeed necessary components of this position within the Army’s operational framework.