The triggering mechanism of Mercedes-Benz's Attention Assist system is primarily based on real-time monitoring of the driver's behavior patterns and vehicle dynamics. The system automatically activates when the vehicle speed is between 60 and 200 km/h, and comprehensively assesses the risk of fatigue or distraction through more than 70 preset parameters (such as the frequency of minor steering adjustments, lane-keeping stability, and driving duration). Specific triggering conditions include: continuous straight-line driving for more than 20 minutes without obvious steering operations, abnormal speed fluctuations (such as sudden acceleration or deceleration), prolonged driving in nighttime or low-visibility environments, and physiological signals captured by the built-in camera (such as frequent yawning or eye deviation). After the system determines a risk, it issues three levels of warnings: text alerts on the instrument panel, beep prompts, and steering wheel vibrations. Some models also link with navigation to recommend nearby rest areas. Since its launch in 2009, this technology has been continuously optimized, and its core value lies in upgrading passive safety to active intervention. Car owners can adjust the sensitivity through the infotainment menu to adapt to their personal driving habits, but this system, as an auxiliary function, cannot completely replace the driver's active vigilance.
