CFR › Title 41 › Part 109-641 CFR Part 109-6 — Miscellaneous RegulationsSubpart 109-6.4 — Official Use of Government Passenger Carriers Between Residence and Place of Employment§ 109-6.400— Scope and applicability.§ 109-6.400-50— Instructions to DOE passenger carrier operators.§ 109-6.402— Policy.§ 109-6.450— Statutory provisions.