Changan Qiyuan Responds to Fatal Highway Rear-End Collision Involving IACC Driver Assistance

[Safety Incident] A Changan Qiyuan A07 rear-ended a stationary heavy truck on the highway, resulting in three fatalities. The automaker clarified the operational limits of its driver assistance system.

Core Insight: L2 System Has Clear Technical Boundaries

In the early hours of October 2, 2025, a rear-end collision occurred on the Jiguang Expressway in Ruijin, Jiangxi Province. A Changan Qiyuan A07 struck a stationary heavy-duty truck, causing three deaths. According to the investigation report, the driver had activated the IACC driver assistance system prior to the crash and released the steering wheel for 13 seconds before impact, without pressing either the brake or accelerator pedal.

Key Data: 96 km/h Is the System’s Braking Limit

The involved vehicle was a 2024-model A07 equipped with the previous-generation IACC system, which lacks LiDAR. The manufacturer stated that when traveling above 96 km/h, the system cannot guarantee a full stop when encountering a stationary obstacle ahead. Additionally, its detection capability is limited under conditions such as nighttime, rain, fog, or insufficient lighting.

Industry Impact: Responsibility Boundaries of L2 Driver Assistance Re-examined

The automaker emphasized that IACC is merely an L2-level driver assistance feature, requiring the driver to remain fully attentive at all times. This incident has once again prompted industry-wide reflection on the gap between marketing claims about intelligent driving systems and user understanding.