In-vehicle detection of alcohol and drug impaired drivers
This pre-study aims to lay the groundwork for a future large-scale research initiative focused on developing in-vehicle systems capable of detecting alcohol and drug-impaired drivers. The project responds to emerging regulatory and safety requirements, such as Euro NCAP’s 2026 protocol and NHTSA’s proposed rulemaking, which emphasize non-intrusive impairment detection technologies.
The study will consolidate insights from previous alcohol detection projects in Sweden, identify best practices and common pitfalls in experimental design, and prepare for future data collection involving both alcohol and other substances like cannabis. Key activities include a literature review, collaborative workshops, and an investigation into the legal and ethical permits required for conducting impairment studies. The expected outcomes include a refined experimental design, a list of relevant impairment metrics, and a roadmap for obtaining necessary approvals.
Project partners: The project is a collaboration between SAFER partners (VTI, Magna, Smart Eye, Volvo Cars, Volvo Group) and the external partner RespiroCraft, which brings expertise in THC detection via exhaled breath.
Traffic Safety Benefit: Drunk and drugged driving contributes to approximately 25% of road fatalities in Sweden and similar levels internationally. By enabling early and accurate detection of impaired drivers, this project supports the SAFER vision of a road transport system safe for all. The long-term goal is to improve sensor technologies and algorithms that can prevent impaired driving, thereby significantly enhancing traffic safety.
Keywords: Driver impairment detection, Alcohol, Drugs, Driver monitoring system (DMS).
