; and (2) submit to the Committee on Commerce, Science, and Transportation of the Senate and the Committee on Transportation and Infrastructure of the House of Representatives a report on the review, including recommendations under subsection (c). (b) Contents The report under subsection (a) shall include— (1) a description of the process the Department of Transportation uses to collect and record drug and alcohol testing data submitted by employers for each mode of transportation; (2) an assessment of whether and, if so, how the Department of Transportation uses the data described in paragraph (1) in carrying out its responsibilities; (3) an assessment of the extent to which the data described in paragraph (1) is distributed and available within the Department of Transportation; and (4) an assessment of the extent to which drug and alcohol positive rates for each mode of transportation are publicly available. (c) Recommendations The report under subsection (a) may include recommendations regarding— (1) how the Department of Transportation can best use the data described in subsection (b)(1); (2) any improvements that could be made to the process described in subsection (b)(1); (3) whether and, if so, how drug and alcohol positive rates for each mode of transportation should be made publicly available in an easily accessible format; and (4) such other recommendations as the Comptroller General considers appropriate. 5. Transportation Workplace Drug and Alcohol Testing Program