The key finding
A comprehensive review of 77 studies published between 2012 and 2025 found that most cognitive tests used to evaluate driving fitness fall short of scientific standards. Researchers examined 56 different cognitive assessment tools or test batteries designed to predict whether older adults or people with cognitive conditions could safely drive. Of these 56 tools, only four met established psychometric standards for accuracy and reliability. Among those four, only one assessment—called DriveSafe DriveAware—also met criteria for practical clinical use, meaning it was feasible for healthcare providers to administer in real-world settings. This gap between available tools and scientifically validated options has significant implications for the millions of people whose driving privileges depend on these evaluations.
What the study looked like
This scoping review followed the Joanna Briggs Institute framework, a rigorous method for synthesizing research evidence. The research team searched through 2,247 published articles and selected 77 studies that compared clinical cognitive assessments with actual on-road driving test results. The included studies focused on two main populations: older adults experiencing age-related cognitive changes and individuals with health conditions known to affect cognition, such as dementia, stroke, or traumatic brain injury. Each study had to compare performance on at least one cognitive assessment with results from a real-world on-road driving evaluation, which researchers consider the gold standard for determining driving ability. The team systematically extracted data from each study and evaluated the cognitive tools using established criteria for both psychometric quality (how accurately and consistently they measure what they claim to measure) and clinical utility (how practical they are to use in healthcare settings).
Why researchers think this happened
The authors suggest that the disappointing performance of most cognitive assessments reflects a fundamental challenge: driving is an extraordinarily complex task that requires the integration of multiple cognitive abilities simultaneously. Standard cognitive tests typically measure individual mental functions in isolation—such as memory, attention, or processing speed—but driving demands the coordinated use of perception, decision-making, motor control, and environmental awareness all at once. Tests conducted in quiet clinical offices may not capture how these abilities work together in the dynamic, unpredictable environment of real traffic. The one tool that met both standards, DriveSafe DriveAware, takes a more functional approach by attempting to simulate actual driving-related cognitive demands rather than testing isolated mental abilities. The review builds on decades of prior research showing that no single cognitive domain perfectly predicts driving performance, suggesting that functionally oriented assessments combined with clinical judgment may offer a more realistic evaluation framework.
How to read this carefully
This review has important limitations readers should consider. First, it’s a scoping review rather than a systematic meta-analysis, meaning the authors surveyed the landscape of research without statistically combining results across studies. Second, the studies included varied widely in their populations, methods, and definitions of driving impairment, making direct comparisons challenging. The psychometric and clinical utility criteria applied were based on expert consensus rather than universal standards, and different thresholds might yield different conclusions. Additionally, on-road tests themselves—treated here as the gold standard—can vary in difficulty and scoring methods across different testing centers and examiners. The review focused on studies published since 2012, so it may have excluded older but still relevant research. Finally, correlation between test performance and driving ability doesn’t necessarily mean the test causes or directly reflects safe driving capacity—other factors like driving experience, familiarity with routes, or test-day anxiety could influence both measures.
What this means for everyday life
For older adults or people with cognitive conditions who worry about maintaining their independence through driving, this review suggests caution about relying solely on brief cognitive screening tests to determine fitness to drive. If a healthcare provider recommends a cognitive assessment related to your driving privileges, it might be worth asking which specific tool they’re using and whether it has been validated against actual driving performance. The findings suggest that comprehensive on-road evaluations—though more time-consuming and expensive—remain the most reliable way to assess real-world driving ability. For families navigating difficult conversations about an older relative’s driving safety, this research indicates that a single “failed” cognitive test shouldn’t necessarily end the discussion, nor should a “passed” test provide complete reassurance. Given these findings, combining multiple sources of information—including functional assessments, clinical judgment from providers familiar with the individual, and perhaps trial on-road evaluations—may offer a more balanced approach to these consequential decisions about independence and safety.