Looking at the results from this study we can say cannabis makes stuff all difference with driving a motor vehicle.
CBD in Cannabis Does Not Hinder Driving, Shows Study
These findings may help create specific drug-driving laws and help manage medical cannabis in general.
A new study led by scientists at the University of Sydney, Australia, shows that a medically active component of cannabis, cannabidiol (CBD), does not impair drivers and only moderate THC effects last a few hours.
These findings may help create specific drug-driving laws and help manage medical cannabis in general.
The study was published today in the Journal of the American Medical Association.
https://interestingengineering.com/cbd-in-cannabis-does-not-hinder-driving-shows... Effect of Cannabidiol and Δ9-Tetrahydrocannabinol on Driving Performance
A Randomized Clinical Trial
Question- What is the magnitude and duration of driving impairment following vaporization of cannabis containing varying concentrations of Δ9-tetrahydrocannabinol (THC) and cannabidiol (CBD)?
Main Outcomes and Measures- The primary end point was standard deviation of lateral position (SDLP; a measure of lane weaving) during 100 km, on-road driving tests that commenced at 40 minutes and 240 minutes after cannabis consumption. At a calibrated blood alcohol concentration (BAC) of 0.02%, SDLP was increased relative to placebo by 1.12 cm, and at a calibrated BAC of 0.05%, SDLP was increased relative to placebo by 2.4 cm.
Results- Among 26 randomized participants (mean [SD] age, 23.2 [2.6] years; 16 women), 22 (85%) completed all 8 driving tests. At 40 to 100 minutes following consumption, the SDLP was 18.21 cm with CBD-dominant cannabis, 20.59 cm with THC-dominant cannabis, 21.09 cm with THC/CBD-equivalent cannabis, and 18.28 cm with placebo cannabis. SDLP was significantly increased by THC-dominant cannabis (+2.33 cm [95% CI, 0.80 to 3.86]; P < .001) and THC/CBD-equivalent cannabis (+2.83 cm [95% CI, 1.28 to 4.39]; P < .001) but not CBD-dominant cannabis (−0.05 cm [95% CI, −1.49 to 1.39]; P > .99), relative to placebo. At 240 to 300 minutes following consumption, the SDLP was 19.03 cm with CBD-dominant cannabis, 19.88 cm with THC-dominant cannabis, 20.59 cm with THC/CBD-equivalent cannabis, and 19.37 cm with placebo cannabis. The SDLP did not differ significantly in the CBD (−0.34 cm [95% CI, −1.77 to 1.10]; P > .99), THC (0.51 cm [95% CI, −1.01 to 2.02]; P > .99) or THC/CBD (1.22 cm [95% CI, −0.29 to 2.72]; P = .20) conditions, relative to placebo.
https://jamanetwork.com/journals/jama/article-abstract/2773562 This study shows at 100 Kph those who are stoned (THC) can keep a car in their lane within 2cm of those taking a placebo.