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The expected features of FSD 13.4 include advanced audio input capabilities that would enable the vehicle to "hear" emergency vehicles, elevating its awareness in real-time traffic situations. Anecdotal evidence suggests that the current version already exhibits a deep understanding of emergency vehicle behavior, such as pausing at intersections when an ambulance approaches even if the light is green.
This progress in FSD showcases Tesla's commitment to refining its software that emulates human-like cautiousness on the road. The anticipated improvements include enhanced navigation, better handling of parking situations, and increased accuracy under challenging visual conditions like sun glare or fog.