§ 490.507. National performance management measures for system performance.
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/us/cfr/t23/s§ 490.507·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
There are two performance measures to assess the performance of the Interstate System and the performance of the non-Interstate NHS for the purpose of carrying out the National Highway Performance Program (referred to collectively as the NHS Performance measures).
(a)Two measures are used to assess reliability (referred to collectively as the Travel Time Reliability measures). They are:
(1)Percent of the person-miles traveled on the Interstate that are reliable (referred to as the Interstate Travel Time Reliability measure); and
(2)Percent of person-miles traveled on the non-Interstate NHS that are reliable (referred to as the Non-Interstate Travel Time Reliability measure).
(b)\[Reserved\] \[82 FR 6031, Jan. 18, 2017, as amended at 83 FR 24936, May 31, 2018; 88 FR 85392, Dec. 7, 2023; 90 FR 16466, Apr. 18, 2025\]
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§ 490.507
National performance management measures for system performance.
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