(a) The performance for freight movement on the Interstate in §490.607 (the Freight Reliability measure) shall be calculated in accordance with this section by State DOTs and MPOs to carry out the freight movement on the Interstate System related requirements of this part, and by FHWA to make the significant progress determinations specified in §490.109 and to report on freight performance of the Interstate System.
(b) The Freight Reliability measure shall be computed to the nearest hundredth as follows:
Where:
i = An Interstate System reporting segment;
maxTTTRi = The maximum TTTR of the five time periods in paragraphs (a)(1)(i) through (v) of §490.611, to the nearest hundredth, of Interstate System reporting segment “i”;
SLi = Segment length, to the nearest thousandth of a mile, of Interstate System reporting segment “i”; and
T= A total number of Interstate System reporting segments.
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