Recreational marijuana and road safety: need to measure/enforce impairment at odds with scientific evidence for establishing threshold

Experts say legal weed calls for a ‘paradigm shift’ on how we think about impairment — and drugged driving
Hartford Courant, February 15, 2019

Centerpiece of Gov. Baker’s sweeping road safety bill is handheld ban for Massachusetts

Baker’s bill targets distracted driving, seatbelt scofflaws
Associated Press, January 22, 2019

Fines and penalties set for January 1, in Ontario, make for Canada’s ‘toughest penalties for repeat distracted driving convictions’

Ontario’s new distracted driving law to start in 2019
CBC News, November 22, 2018