; and (2) by adding at the end the following: (k) Drug-Impaired driving prevention pilot program (1) In general Not later than 1 year after the date of enactment of this subsection, the Secretary shall establish a pilot program to create, and study the effects of, a public awareness campaign to reduce instances of driving while under the influence of prescription and over-the-counter medications. (2) Locations The Secretary shall implement the pilot program in States that are, or a region that is, most affected by the opioid epidemic, as measured by the most recent opioid-involved overdose deaths per 10,000 persons, as reported by the Centers for Disease Control and Prevention. (3) Sunset The authority of the Secretary under paragraph (1) shall terminate on the date that is 2 years after the date on which the pilot program is established pursuant to paragraph (1). (4) Report Not later than 1 year after the date of termination of the pilot program described in paragraph (3), the Secretary shall submit to the Committee on Transportation and Infrastructure of the House of Representatives and the Committee on Commerce, Science, and Transportation of the Senate a report on the results of the study of the effects of the public awareness and enforcement campaign. (l) Research and training on marijuana detection (1) In general The Administrator of the National Highway Traffic Safety Administration shall carry out a collaborative research effort to study the effect that marijuana has on driving and research ways to detect and reduce incidences of driving under the influence of marijuana. (2) Reports The Administrator shall submit to the Committee on Commerce, Science, and Transportation of the Senate and the Committee on Transportation and Infrastructure of the House of Representatives an annual report that— (A) describes the progress made in carrying out the collaborative research effort