Department of Defense
INSTRUCTION
NUMBER 5154.31, Volume 2
October 16, 2015
USD(P&R)
SUBJECT: Commercial Travel Management: General Travel Provisions
References: See Enclosure 1
1. PURPOSE
a. Instruction. This instruction is composed of several volumes, each containing its own
purpose. The purpose of the overall instruction, in accordance with the authority in DoD
Directive 5124.02 (Reference (a)), is to establish and implement policy, assign responsibilities,
and provide procedures regarding the commercial travel program within the DoD.
b. Volume. This volume:
(1) Establishes and implements policy, assigns responsibilities, and provides procedures
for official travel.
(2) Authorizes the Unused Ticket Regulations (Reference (b)) in accordance with the
authority in Reference (a).
2. APPLICABILITY. This volume applies:
a. To OSD, the Military Departments, the Office of the Chairman of the Joint Chiefs of Staff
and the Joint Staff, the Combatant Commands, the Office of the Inspector General of the
Department of Defense, the Defense Agencies, the DoD Field Activities, and all other
organizational entities within the DoD (referred to collectively in this volume as the
“DoD Components”).
b. Only as guidance to the non-DoD uniformed services.
3. POLICY. It is DoD policy that:
a. Travel authorizations or orders must be issued in accordance with the procedures in
this volume.
