48 CFR §1232.770-4

1. (a)A fixed-price, time-and-materials, or labor-hour contract or order for commercial or non-commercial severable services may be incrementally funded when—
   1. (1)Funds are provided to DOT or operating administration under a CR. This includes funds appropriated to DOT or an operating administration, funds appropriated to another entity that will be directly obligated on a DOT contract, and funds in a revolving fund or similar account that will be reimbursed by a customer agency funded by a CR;
   2. (2)The responsible fiscal authority has not allocated sufficient funds to fully fund the contract action that is otherwise authorized to be issued;
   3. (3)There is no statutory restriction that would preclude the proposed use of funds;
   4. (4)Funds are available and unexpired, as of the date the funds are obligated;
   5. (5)Assurance is provided by the responsible financial authority that full funding is anticipated once an appropriations act is enacted; and
   6. (6)The clause prescribed by 1232.770-7 is incorporated into the contract or order.
2. (b)Incremental funding may be limited to an individual line item(s) or a particular order(s).