113 STAT. 1772 PUBLIC LAW 106-159—DEC. 9, 1999 of title 49, Code of Federal Regulations, including the identity of each person tested and each controlled substance found, to the State that issued the driver's commercial driver's license; and (2) requiring all prospective employers, before hiring any driver, to query the State that issued the driver's commercial driver's license on whether the State has on record any verified positive controlled substances test on such driver. (b) STUDY FACTORS.— In carrying out the study under this section, the Secretary shall assess— (1) methods for safeguarding the confidentiality of verified positive controlled substances test results; (2) the costs, benefits, and safety impacts of requiring States to maintain records of verified positive controlled substances test results; and (3) whether a process should be established to allow drivers— (A) to correct errors in their records; and (B) to expunge information from their records after a reasonable period of time. Deadline. (c) REPORT.—Not later than 2 years after the date of the enactment of this Act, the Secretary shall submit to Congress a report on the study carried out under this section, together with such recommendations as the Secretary determines appropriate. SEC. 227. APPROVAL OF AGREEMENTS. (a) REVIEW. —Section 13703(c) of title 49, United States Code, is amended— (1) by redesignating paragraphs (1) through (4) as subparagraphs (A) through (D), respectively; (2) by striking "The Board" and inserting the following: "(1) IN GENERAL.— The Board"; (3) by adding at the end the following: "(2) PERIODIC REVIEW OF APPROVALS.— Subject to this section, in the 5-year period beginning on the date of the enactment of this paragraph and in each 5-year period thereafter, the Board shall initiate a proceeding to review any agreement approved pursuant to this section. Any such agreement shall be continued unless the Board determines otherwise."; and (4) by moving the remainder of the text of paragraph (1) (as designated by paragraph (2) of this subsection), including subparagraphs (A) through (D) (as designated by paragraph (1) of this subsection), 2 ems to the right. (b) LIMITATION.— Section 13703(d) of such title is amended to read as follows: "(d) LIMITATION. —The Board shall not take any action that would permit the establishment of nationwide collective ratemaking authority.". (c) EXISTING AGREEMENTS.— Section 13703(e) of such title is amended— (1) by striking "Agreements" and inserting the following: "(1) AGREEMENTS EXISTING AS OF DECEMBER 3I, 1995.— Agreements"; (2) by adding at the end the following: "(2) CASES PENDING AS OF DATE OF THE ENACTMENT.— Nothing in section 227 (other than subsection (b)) of the Motor
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