As China's National Day holiday approaches, many drivers are planning long road trips with their cars' assisted-driving features engaged. But a recent crash on the Shanghai-Kunming Expressway in Anshun, Guizhou, serves as a stark reminder that these systems are not yet fully autonomous. The driver, using a navigation-assisted driving function, rear-ended a truck when the system suddenly disengaged with less than 10 meters to spare, leaving no time to brake. Fortunately, no one was injured, but the incident highlights a growing concern among Chinese drivers: assisted-driving systems often exit at the worst possible moment.
According to a report by the state-run People's Daily, the driver had become over-reliant on the system and was not paying full attention. The traffic police ruled that the driver was ultimately responsible, as assisted driving is only a support feature. This case echoes numerous others reported in recent months, including a crash in Binzhou, Shandong, where a vehicle's driving-assist icon disappeared seven seconds before impact, and the collision occurred two seconds later, leaving a 40-year veteran driver no time to react. Complaints on the Chezhiwang platform describe systems misidentifying barriers, issuing warnings, and then forcibly exiting, causing vehicles to scrape guardrails.
The root problem, as outlined by the tech outlet Huxiu, is that current production vehicles are all classified as L2 (partial automation) under Chinese law, even if marketing calls them "advanced" or "L2.9." When the system encounters a situation beyond its capabilities, it triggers a protective mechanism that hands control back to the driver—often just one or two seconds before a collision. Human reaction time typically ranges from 1 to 5 seconds, so such abrupt exits leave drivers helpless.
Legal gray zone
Under current regulations, the driver is always the responsible party when assisted driving is engaged. A guiding case issued by the Supreme People's Court in February 2026 reaffirmed that the driver remains the operator even with the system active. This has given automakers a reliable legal shield: as long as they issue a warning and log the exit, they are considered compliant, regardless of how little time the driver had to react.
This ambiguity has allowed the "last-second exit" pattern to persist. However, new mandatory national standards are set to change the landscape. The "Safety Requirements for Combined Driving Assistance Systems for Intelligent Connected Vehicles," released in June, establishes safety baselines for L2 systems and explicitly states that driver responsibility does not absolve the system of liability. A follow-up standard in July, the first mandatory national standard for high-level automated driving, requires that when a system requests driver takeover, it must provide at least 10 seconds of response time, with escalating warnings including haptic feedback such as seat vibration or brake pulses. If the driver does not respond within 10 seconds, the system must initiate a minimal-risk maneuver, such as slowing down, activating hazard lights, and pulling over safely.
These standards, effective in January 2027 and July 2027 respectively, will make "last-second exits" illegal for L3 (conditional automation) systems. If a system fails to provide the required 10-second window, liability will shift to the automaker. This marks a significant step toward clarifying responsibility in the gray zone between human and machine driving.
