Papers › Multimodal Trajectory Prediction Conditioned on Lane-Graph Traversals

Multimodal Trajectory Prediction Conditioned on Lane-Graph Traversals

28 Jun 2021arXiv:2106.15004archive 2025-07-28

Nachiket Deo, Eric M. Wolff, Oscar Beijbom

Accurately predicting the future motion of surrounding vehicles requires reasoning about the inherent uncertainty in driving behavior. This uncertainty can be loosely decoupled into lateral (e.g., keeping lane, turning) and longitudinal (e.g., accelerating, braking). We present a novel method that combines learned discrete policy rollouts with a focused decoder on subsets of the lane graph. The policy rollouts explore different goals given current observations, ensuring that the model captures lateral variability. Longitudinal variability is captured by our latent variable model decoder that is conditioned on various subsets of the lane graph. Our model achieves state-of-the-art performance on the nuScenes motion prediction dataset, and qualitatively demonstrates excellent scene compliance. Detailed ablations highlight the importance of the policy rollouts and the decoder architecture.

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nachiket92/PGP officialmentioned on GitHubpytorchMIT report

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Tasks

DecoderPredictionTrajectory Predictionmotion prediction

Results from the paper archive 2025-07-28

TaskDatasetModelMetricValueRank at snapshotLeaderboardReport
Trajectory Prediction nuScenes PGP MinADE_10 0.94 #6 of 34 Archive leaderboard report
Trajectory Prediction nuScenes PGP MinADE_5 1.27 #6 of 34 Archive leaderboard report
Trajectory Prediction nuScenes PGP MinFDE_1 7.17 #6 of 34 Archive leaderboard report
Trajectory Prediction nuScenes PGP MissRateTopK_2_10 0.34 #6 of 34 Archive leaderboard report
Trajectory Prediction nuScenes PGP MissRateTopK_2_5 0.52 #6 of 34 Archive leaderboard report
Trajectory Prediction nuScenes PGP OffRoadRate 0.03 #6 of 34 Archive leaderboard report

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