Background:

• This presentation provides an overview of information available on alcohol test results for drivers involved in fatal and serious injury collisions, as well as toxicology results for deceased drivers.
• The RSA has a statutory remit to report on injury collisions that have occurred on a public road using collision data provided by AGS*.
• Drivers involved in casualty collisions may have been tested for alcohol at the scene, station or hospital. The RTC data tells us at which (if any) of these locations a test was conducted and the result of this test (positive/negative). The blood alcohol level (BAC) level is not recorded.
• The analysis from road traffic collision data in this report relates to surviving drivers only. Toxicology results for deceased drivers are collected and reported separately.
• The Health Research Board (HRB) collects road traffic collision fatalities data annually on behalf of the RSA from closed coronial files using the National Drug-Related Deaths Index (NDRDI) methodology. These data are collected from closed coronial files (i.e., once the inquest has been completed).
• These data include detailed, definitive toxicology results for road user fatalities.
• This presentation also includes some findings in relation to alcohol from a nationally representative selfreport driver attitudes and behaviour survey (2025).