Section 672.13 - [Effective until 11/1/2024] Designated personnel of public transportation agencies(a) Each recipient that operates a rail fixed guideway public transportation system shall designate its personnel and contractors who are directly responsible for safety oversight and ensure their compliance with the applicable training requirements set forth in Appendix A to this part.(b) Each recipient that operates a bus or other public transportation system not subject to the safety oversight of another Federal agency may designate its personnel who are directly responsible for safety oversight to participate in the applicable training requirements as set forth in Appendix A to this part.(c) Personnel designated under paragraph (a) of this section shall complete applicable training requirements of this part within three (3) years of their initial designation. Thereafter, refresher training shall be completed every two (2) years. The recipient shall determine refresher training requirements which must include, at a minimum, one (1) hour of safety oversight training.