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Traffic Signal Quality Improvement for Waymo Open Motion Dataset

Automated method to impute and clean traffic signals in WOMD; reduced red-light violations 15.7%→1.3% and missing/unknown 71.7%.

Overview

Built a scalable pipeline to infer traffic-signal states from context, lane geometry, and trajectories.

Validated across 530k+ scenarios; method open-sourced and presented in TRB 2025.

Media placeholder: Add before/after charts and video overlay examples.