; (2) in subsection (b), by striking paragraphs (1) and (2) and inserting the following: (1) In general Testing programs established under subsection (a) may not exceed— (A) 5 percent of the total miles of hazardous liquid pipelines in the United States; and (B) 5 percent of the total miles of natural gas pipelines in the United States. (2) Operator mileage limitation The Secretary shall limit the miles of pipelines that each operator can test under each program established under subsection (a) to the lesser of— (A) 50 percent of the total miles of pipelines in the system of the operator; or (B) 1,000 miles. ; (3) in subsection (c)— (A) in paragraph (1), by striking 3 years and inserting 4 years ; and (B) in paragraph (2), by striking 3 years after the date of enactment of this section and inserting 3 years after the date of enactment of the Pipeline Safety, Modernization, and Expansion Act of 2024 ; (4) in subsection (d)— (A) in paragraph (1), by inserting equal to or before greater than ; (B) in paragraph (2)— (i) in subparagraph (A), by striking under subparagraph (A) of section 60118(c)(1) and inserting waiving compliance with any part of an applicable standard prescribed under this chapter ; (ii) in subparagraph (B), by striking pertain only to those regulations that would otherwise prevent the use of the safety technology to be tested under the testing program and inserting require no further conditions beyond compliance with this section