net highway receipts
(5) Definitions For purposes of this subsection— (A) Unfunded highway authorizations The term “unfunded highway authorizations” means, at any time, the excess (if any) of— (i) the total potential unpaid commitments at such time as a result of the apportionment to the States of the amounts authorized to be appropriated from the Highway Trust Fund, over (ii) the amount available in the Highway Trust Fund at such time to defray such commitments (after all other unpaid commitments at such time which are payable from the Highway Trust Fund have been defrayed). (B) Net highway receipts The term “net highway receipts” means, with respect to any period, the excess of— (i) the receipts (including interest) of the Highway Trust Fund during such period, over (ii) the amounts to be transferred during such period from such Fund under subsection (c) (other than paragraph (1) thereof).