; (2) provides an update on the progress of the study conducted pursuant to subsection (a); and (3) includes the results of the study if the study has been completed. 7. Roadside oral fluid drug screening (a) Defined term In this section, the term onsite refers to oral fluid drug screening devices that are used at roadside or at the station. (b) Study The Secretary of Transportation, in consultation with the heads of appropriate Federal agencies and local law enforcement officers and prosecutors, shall conduct a study regarding the accuracy of onsite oral fluid screening for tetrahydrocannabinol (referred to in this section as THC ) and opiate presence in order to reduce the potential impact on traffic safety due to drug and polysubstance-impaired drivers. (c) Issues To be examined In conducting the study under subsection (b), the Secretary shall examine— (1) the status of onsite oral fluid drug screening technology that is available at the time the study is conducted; (2) the reliability and accuracy of the devices referred to in paragraph (1) to determine the presence and amount of THC and opiate, as confirmed by toxicology results; (3) oral fluid research and pilot programs in the United States and in other countries to assess how the technology referred to in paragraph (1) is being utilized; (4) State-based policies regarding implied consent and testing in impaired driving cases; (5) practical considerations for the deployment of this technology in the field