https://trid.trb.org/ en-us Copyright © 2026. National Academy of Sciences. All rights reserved. http://blogs.law.harvard.edu/tech/rss tris-trb@nas.edu (Bill McLeod) tris-trb@nas.edu (Bill McLeod) https://trid.trb.org/Images/PageHeader-wTitle.jpg https://trid.trb.org/ https://trid.trb.org/View/1841049 Mon, 05 Apr 2021 09:51:35 GMT https://trid.trb.org/View/1841049 https://trid.trb.org/View/1777459 0.001 g/100 mL: 21.1%; >0.05 g/100 mL: 18.4%), followed by opioids (17.3%), THC (13.1%), antidepressants (9.7%), benzodiazepines (8.8%), amphetamine-type stimulants (7.1%), ketamine (3.4%), antipsychotics (0.9%) and cocaine (0.2%). Trends demonstrated changing use over time with specific drugs. Alcohol positive road fatalities declined 9% per year in passenger car/4WD drivers (IRR = 0.91, 95% CI: 0.88−0.95). The incidence of strong opioids (oxycodone, fentanyl, morphine, and methadone) increased 6% per year (IRR = 1.06; 95% CI: 1.02–1.10). Methylamphetamine was detected in 6.6% of cases and showed a yearly increase of 7% (IRR = 1.07; 95% CI: 1.01–1.13). The incidence of THC remained unchanged over the period, observed in 13.1% of cases. Stronger opioids were more commonly detected among pedal cyclists (19.0%) and pedestrians (20.9%) while THC was more commonly detected among motorcyclists (19.8%) and other light vehicle drivers (17.6%). A decline in the prevalence of alcohol in fatalities suggests that law enforcement and public health strategies in Australia to address road fatalities and drink-driving may have had a positive effect. However, increases were observed in the incidence of other potentially impairing drugs including opioids and amphetamines, specifically methylamphetamine, indicating a concerning trend in road safety in Victoria that warrants further monitoring.]]> Thu, 25 Mar 2021 09:35:06 GMT https://trid.trb.org/View/1777459 https://trid.trb.org/View/1399500 Fri, 26 Feb 2016 09:30:05 GMT https://trid.trb.org/View/1399500 https://trid.trb.org/View/1367651 Tue, 01 Sep 2015 11:20:51 GMT https://trid.trb.org/View/1367651 https://trid.trb.org/View/1163783 Thu, 23 Aug 2012 14:24:49 GMT https://trid.trb.org/View/1163783 https://trid.trb.org/View/1161389 Thu, 23 Aug 2012 09:39:12 GMT https://trid.trb.org/View/1161389 https://trid.trb.org/View/923638 Tue, 20 Jul 2010 08:16:09 GMT https://trid.trb.org/View/923638 https://trid.trb.org/View/862786 Mon, 16 Jun 2008 08:37:35 GMT https://trid.trb.org/View/862786 https://trid.trb.org/View/850949 Wed, 23 Apr 2008 11:49:21 GMT https://trid.trb.org/View/850949 https://trid.trb.org/View/783195 Thu, 29 Jun 2006 07:38:44 GMT https://trid.trb.org/View/783195 https://trid.trb.org/View/699773 Thu, 22 Apr 2004 00:00:00 GMT https://trid.trb.org/View/699773 https://trid.trb.org/View/644894 Thu, 08 May 2003 00:00:00 GMT https://trid.trb.org/View/644894 https://trid.trb.org/View/710949 Fri, 03 May 2002 00:00:00 GMT https://trid.trb.org/View/710949 https://trid.trb.org/View/707532 Fri, 03 May 2002 00:00:00 GMT https://trid.trb.org/View/707532 https://trid.trb.org/View/674803 Wed, 07 Feb 2001 00:00:00 GMT https://trid.trb.org/View/674803