DSSCDA records vehicle status, ADAS operating parameters, driver behavior, and environmental perception data. It automatically saves data during critical events such as collisions and emergency braking, providing authoritative evidence for accident investigation and liability determination.

On 2026-6-27, the national mandatory standard GB 47955—2026 "Safety Requirements for Combined Driving Assistance Systems for Intelligent Connected Vehicles" was officially released. Effective from 2027-1-1, this is China's first mandatory national standard for L2-level autonomous driving. Appendix F, "Data Recording Requirements," establishes a unified national baseline for in-vehicle electronic forensics. Covering data storage, recorded fields, read protocols, and anti-overwrite mechanisms, it provides statutory authority to support police on-site investigations and judicial appraisals with lossless verification.

When an accident occurs while assisted driving is active, automakers often shift blame to the driver for failing to take over in time. To prove it was a vehicle issue, the key is to immediately secure multi-dimensional objective evidence—most critically, dashcam footage and EDR data.