48 CFR 1232.770-4: 1232.770-4 Policy.

(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) 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) The responsible fiscal authority has not allocated sufficient funds to fully fund the contract action that is otherwise authorized to be issued;

(3) There is no statutory restriction that would preclude the proposed use of funds;

(4) Funds are available and unexpired, as of the date the funds are obligated;

(5) Assurance is provided by the responsible financial authority that full funding is anticipated once an appropriations act is enacted; and

(6) The clause prescribed by 1232.770-7 is incorporated into the contract or order.

(b) Incremental funding may be limited to an individual line item(s) or a particular order(s).