41 C.F.R. § 109-40.302 Standard routing principle.
Title 41 - Public Contracts and Property Management
(a) Shipments shall be routed using the mode of transportation, or individual carriers within the mode, that can provide the required service at the lowest overall delivered cost to the Government. (b) When more than one mode of transportation, or more than one carrier within a mode, can provide equally satisfactory service at the same overall cost the traffic shall be distributed as equitably as practicable among the modes and among the carriers within the modes.
Title 41: Public Contracts and Property Management
PART 109–40—TRANSPORTATION AND TRAFFIC MANAGEMENT
Subpart 109–40.3—Traffic Management
§ 109-40.302 Standard routing principle.