Citing recently completed studies from the Insurance Institute for Highway Safety , the group note that “crash rates spiked” in states with legalized adult-use cannabis and related retail stores.
The contention regarding higher crash risk is at odds with preliminary results of another IIHS study involving injured drivers who were treated in emergency rooms in California, Colorado and Oregon.
“There appears to be virtually no difference in the percentage of crash-involved drivers testing positive for legal drugs at 5.6 percent and control drivers testing positive for legal drugs at 5.5 percent,” notes an NHTSA paper.
IIHS-HLDI acknowledges that, in general, findings of related studies have been inconsistent.
The story was a whole lot different when cannabis and alcohol were combined, which was reported by three per cent of crash-involved drivers and less than one per cent of the control drivers.
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