41 CFR § 109-6.402 - Policy.

(a) It is DOE policy that Government motor vehicles operated by DOE employees are to be used only for official Government purposes or for incidental purposes as prescribed in this section. The Office of Management and Program Secretarial Officer (PSO) for their respective organizations shall establish appropriate controls to ensure that the use of a Government motor vehicle for transportation between an employee's residence and place of employment is in accordance with the provisions of 41 CFR part 102–5 and this subpart.

(b) It is DOE policy that space in a Government motor vehicle used for home-to-work transportation may be shared with a spouse, relative, or friend in accordance with the restrictions contained in 41 CFR 102–5.105.