SECTION 1. Paragraph (1) of subsection (f) of section 24 of chapter 90 of the general laws, as appearing in the 2014 official edition, is hereby amended by inserting after the word “liquor” on line 538, the following words:- “or marijuana”

SECTION 2. The secretary of public safety shall investigate best practices for the determination of instances of drugged driving. The investigation shall include but not be limited to: (i) a review of available technology that may be used to detect tetrahydrocannabinol; (ii) the efficacy of establishing an impairment level for tetrahydrocannabinol; (iii) if there is a need for additional drug recognition experts to be trained and any costs associated; (iv) a review of procedures that other jurisdictions where marijuana use is legal employ to detect driving under the influence of marijuana; and (v) the effectiveness of the implied consent law as it relates to operating a motor vehicle while under the influence of marijuana.

The secretary shall file a report of its findings and recommendations with the clerks of the house of representatives and the senate, the chairs of the house and senate committees on ways and means, the house and senate chairs of the joint committee on the judiciary, the house and senate chairs of the joint committee on public safety and homeland security and the house and senate chairs of the joint committee on marijuana not later than September 1, 2017.

SECTION 3. The executive office of public safety and security shall create a campaign to inform the public about the laws and safety risks of driving under the influence of marijuana to be funded with monies from the marijuana regulation fund established by chapter 94G of the General Laws.