25 CFR 700.531 - Government property.
Employees shall be held accountable for Government property and monies entrusted to their individual use or in connection with their official duties. An employee has a positive duty to protect and conserve Government property and to use it economically and for official purposes only, for example:
(b) Government vehicles may be used only on official business and may not be used for personal use or for travel to or from an employee's place of residence, unless specifically authorized or assigned by the supervisor.
Title 25 published on 2013-04-01
no entries appear in the Federal Register after this date.