Criminal Justice Faculty Publications and Presentations

Relative Risk of Cannabis, Alcohol, and Their Combination on Driver Behavior in Fatal Crashes in Washington State

Document Type

Article

Publication Date

6-30-2023

Abstract

The greater availability of cannabis following legalization increases the likelihood that more drivers will drive drugged, rendering the determination of its effect on crashes a matter of vital public policy interest. For criminal justice agencies, this issue takes on increased importance, as drugged driving is a criminal offense. We examine the relative risk of cannabis (Delta-9-Tetrahydrocannabinols [hereafter THC]), alcohol, and the combination of the two, on fatal crashes in Washington state, using data from the Washington Coded Fatal Crash (WA-CFC) Files, which includes appended toxicology results. Findings indicate the presence of alcohol or the combination of alcohol and THC in the blood of a driver involved in a fatal crash is more likely to be associated with risky driving behaviors, fatal injuries, and death compared to THC alone.

First Page

33

Last Page

59

Publication Title

Journal of Crime and Criminal Behavior

DOI

10.47509/JCCB.2023.v03i01.03

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