Inside a yellow test vehicle climbing a steep incline in western Seoul, 83-year-old Kim Young-hwan suddenly faced an unexpected hurdle: a math problem. "What is 100 minus 7?" flashed across an internal screen. Kim urgently slammed the brakes to keep the car from rolling backward down the slope. "The answer is 93," he said. Only then did he slowly move his foot back to the accelerator to conquer the hill. "I was flustered for a moment, but I think I handled it easily," Kim said. Kim’s multitasking exam was not a standard driving test. It is the front line of Korea's new Driving Ability Diagnosis System, a pilot program launched on Feb. 11 by the National Police Agency and the Korea Road Traffic Authority. Operating once a week at three driver's license examination offices in Seoul — Gangseo, Seobu and Dobong — the initiative targets high-risk drivers aged 75 and older who exhibit physical and cognitive decline. For a rapidly aging nation battling a surge in senior-involved traffic crashes, the pilot represents a critical policy pivot. Authorities are moving away from ineffective camp