汽车安全，一场没有终点的全员马拉松

Core Viewpoint - The article emphasizes the importance of collaboration among all traffic participants for automotive safety, highlighting the critical role of driver control over steering, acceleration, and braking [2]. Group 1: Incident Overview - A recent traffic accident involving a Xiaomi SU7 Ultra in Chengdu, where the driver died after the vehicle caught fire post-collision, has reignited discussions on automotive safety [3]. - The driver was reported to be under the influence of alcohol, and attempts to rescue the driver were hindered by the inability to open the car doors from the outside [3]. Group 2: Design and Safety Concerns - The design of non-mechanical door handles in electric vehicles has come under scrutiny following several incidents where doors could not be opened after collisions, raising safety concerns [4][5]. - The automotive industry must balance addressing specific safety issues with the need for technological advancement, as automotive safety is a complex field requiring rational and objective analysis [5]. Group 3: Lock Mechanism and Emergency Procedures - Modern vehicles typically incorporate automatic locking and unlocking mechanisms to enhance safety, such as locking doors when the vehicle reaches speeds of 10-20 km/h and unlocking them in the event of a collision [7]. - The locking mechanism is designed to prevent doors from opening during a collision to keep occupants secure, with unlocking occurring only after the vehicle has come to a stop [11]. Group 4: Redundancy and Reliability - The industry employs redundancy in power supply systems to ensure that door locks function even if the primary power source fails, with some brands implementing a third layer of redundancy [16]. - Despite these measures, no automotive company can guarantee absolute reliability of door lock emergency procedures due to the unpredictable nature of collisions [18]. Group 5: Non-Mechanical Door Handles - Non-mechanical door handles, which require electronic systems to operate, have become increasingly common, with nearly 1 million new vehicles expected to feature this design in 2024 [23]. - Current national standards mandate that at least one door must be operable after a collision, but new regulations are being proposed to enhance safety by requiring mechanical release functions for electronic handles [29][30]. Group 6: Collision Dynamics and Limitations - The energy from high-speed collisions can exceed standard testing thresholds, as demonstrated by the Xiaomi SU7 Ultra accident, where the impact speed was estimated to be over 160 km/h, significantly higher than the typical testing speeds [36]. - The structural integrity of vehicle doors can be compromised in extreme collisions, making it difficult to open them for rescue, as the door's locking mechanism is not the sole factor in door operation [39]. Group 7: Future of Automotive Safety - The automotive safety landscape is evolving, with regulations adapting to higher collision speeds and the need for improved safety measures [41]. - Ultimately, the responsibility for safety lies with the driver, as discussions around automotive safety return to the fundamental principle of safe driving [43].