; (v) a determination about whether onsite oral fluid screening technology can be effectively incorporated into existing driving under the influence investigation protocols; and (vi) an overview of future research needs; and (B) the recommendations of the Secretary based on the study, as appropriate, including— (i) effective and efficient methods for training law enforcement personnel, including drug recognition experts, to detect whether a motor vehicle operator is under the influence through the use of onsite oral fluid technology in combination with existing driving under the influence investigation protocols; (ii) if feasible, model guidelines for the technology referred to in clause (i); (iii) methodologies for evaluating oral fluid use to facilitate increased data collection and analysis and to determine optimal strategies for deploying the technology referred to in clause (i) as part of a pilot program and standard operating procedure in driving under the influence investigations; and (iv) future steps, including a timeline for implementing such steps, that the NHTSA will take to advance research in onsite drug screening technology. 8. GAO report on Department of Transportation drug testing panel (a) In general Not later than 2 years after the date of the enactment of this Act, the Comptroller General of the United States shall— (1) review the Department of Transportation’s process for setting guidelines and drug testing requirements for transportation employees subject to the Department’s drug and alcohol testing policies; and (2) submit a report to the Committee on Commerce, Science, and Transportation of the Senate and the Committee on Transportation and Infrastructure of the House of Representatives that summarizes the results of such review. (b) Contents The report required under subsection (a)(2) shall include— (1) a description of the process used by the Department of Health and Human Services for adding and removing categories of drugs to and from the Federal workplace drug testing requirements