Driver Misuse of ADAS Is Now the Leading Road Safety Threat, Global Survey Finds

This finding is not an outlier. It is supported by a cascade of driver surveys, naturalistic driving studies, and real-world crash data from government agencies on both sides of the Atlantic. And it is prompting the two most influential automotive safety regulators — Euro NCAP and the European Union — to fundamentally rethink how they test and mandate these systems.

The Evidence: Drivers Over-Relax, Over-Trust, and Over-Look

The gap between the promise and the reality of ADAS is stark. The technology works when used correctly, but drivers are demonstrably not using it correctly.

• A 2024 US Department of Transportation naturalistic driving study analyzed 235 safety-critical events involving automated driving systems. It found that 57% involved misuse — drivers were engaged in secondary tasks, using the system outside highways, or driving with hands off the wheel. In 13% of these events, the automated system never reacted at all .

• A 2026 AAA Foundation for Traffic Safety study using data from the Virginia Tech Transportation Institute (VTTI) quantified the distraction offset. Drivers using Level 2 ADAS (which controls both lateral and longitudinal movement) had 1.8 times the odds of engaging in a visual, manual, or combined secondary task compared to when the same system was available but not active . The study found that the simultaneous use of ACC and lane-keeping was associated with an 80% increase in the odds of visual and/or manual secondary tasks .

• A July 2026 UK government evidence review concluded that drivers frequently overestimated these systems' ability to handle adverse weather and complex traffic scenarios. This