ICC (Intelligent Cruise Control) and ACC (Adaptive Cruise Control) are two driving assistance technologies at different levels, with the main differences lying in their functional integration and automation level. As a basic function, ACC monitors the distance to the vehicle ahead via radar or cameras, automatically adjusting the vehicle speed within the range of 0-150 km/h to maintain following distance, but requires the driver to manually control the steering, making it suitable for structured roads such as highways. ICC, on the other hand, is a deep integration of ACC and Lane Keeping System (LKS). It not only enables full-speed-range following but also automatically corrects the steering by recognizing lane lines through cameras to keep the vehicle centered. Some models even support the turn-signal-initiated lane change function, significantly reducing the operational burden of long-distance driving. It should be noted that ICC belongs to L2-level assisted driving, and the driver still needs to remain attentive, especially when lane markings are unclear, in rainy or foggy conditions, or when encountering sudden obstacles, requiring timely takeover. In terms of applicable scenarios, ACC is more suitable for simple following needs during urban commuting, while ICC can provide more comprehensive assistance on controlled-access roads such as highways or expressways. However, neither of them constitutes fully autonomous driving, and the prerequisite for safe operation is the driver's continuous engagement in vehicle control.
