Author

Yi-Wen Chen

University of California, Merced

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Preprint Aug 2026

CAViAR: A Causal Video Dataset for Fine-Grained Accident Reasoning in Real-World Scenarios

CAViAR exposes a practical Perception--Reasoning Gap: current VLMs may recognize salient context, but do not reliably map visible agent actions to annotated rule-relevant responsibility categories in safety-critical driving scenarios, and all models degrade sharply on accident type and responsibility reasoning.

Sparsh Garg, Yi-Wen Chen, Vijay Kumar et al. · 0 citations