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Actually when Subaru first built their EyeSight system, it was almost Tesla Autopilot, but Japanese authority feared it’ll lead to Autopilot type crashes.

The authority was right in hindsight, but then couldn’t conceive the idea of mandatory driver monitoring system, and instead ordered Subaru to ensure driver is alert by making intervention too little and late.

So most LKA/LKAS should do just as well as Tesla’s, only the firmwares are built deliberately with different parameters. Technology wise it should be the same.