Core Viewpoint - The recent incident involving a Haobo GT vehicle using ACC (Adaptive Cruise Control) has raised significant concerns regarding the safety and limitations of L2 level driver assistance systems, particularly in emergency braking scenarios [1][2][3] Group 1: Incident Details - A video showing a Haobo GT colliding with a stationary construction vehicle while using ACC has become a focal point of public discussion [1] - The vehicle involved was a 2023 Haobo GT 560 rear-drive model, equipped with an L2 level driver assistance system that lacks lidar and uses a single monocular camera for front perception [1] - The manufacturer stated that the vehicle is designed to assist drivers but is not intended for full autonomous driving, emphasizing the need for manual control in certain situations [1][2] Group 2: System Limitations - The user manual for Haobo vehicles explicitly warns that the system's pre-warning and braking functions may not operate correctly under specific conditions, such as irregularly shaped vehicles or when using ACC with stationary or low-speed vehicles [2] - The incident highlighted that the AEB (Autonomous Emergency Braking) system did not activate during the collision, with the vehicle traveling at speeds exceeding 80 km/h, surpassing the AEB activation speed limit [2] Group 3: Industry Context - The limitations of AEB systems have been a topic of ongoing debate since the widespread adoption of L2 driver assistance systems, with various manufacturers facing similar challenges regarding AEB activation speeds and object recognition capabilities [3] - Recent regulatory developments, such as the draft safety requirements for intelligent connected vehicles released by the Ministry of Industry and Information Technology, aim to clarify the usage guidelines for L2 driver assistance systems, including AEB functions [3][4] - The new standards emphasize the need for driver assistance systems to effectively respond to foreseeable misuse by drivers and to provide continuous feedback on following distances while in operation [4]