Beyond Imitation: Constraint-Aware Trajectory Generation with Flow Matching For End-to-End Autonomous Driving

Fuente: arXiv
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Main Authors: Liu, Lin, Yu, Guanyi, Song, Ziying, Li, Junqiao, Jia, Caiyan, Jia, Feiyang, Wu, Peiliang, Luo, Yandan
Format: Preprint
Published: 2025
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author Liu, Lin
Yu, Guanyi
Song, Ziying
Li, Junqiao
Jia, Caiyan
Jia, Feiyang
Wu, Peiliang
Luo, Yandan
author_facet Liu, Lin
Yu, Guanyi
Song, Ziying
Li, Junqiao
Jia, Caiyan
Jia, Feiyang
Wu, Peiliang
Luo, Yandan
contents Planning is a critical component of end-to-end autonomous driving. However, prevailing imitation learning methods often suffer from mode collapse, failing to produce diverse trajectory hypotheses. Meanwhile, existing generative approaches struggle to incorporate crucial safety and physical constraints directly into the generative process, necessitating an additional optimization stage to refine their outputs. To address these limitations, we propose CATG, a novel planning framework that leverages Constrained Flow Matching. Concretely, CATG explicitly models the flow matching process, which inherently mitigates mode collapse and allows for flexible guidance from various conditioning signals. Our primary contribution is the novel imposition of explicit constraints directly within the flow matching process, ensuring that the generated trajectories adhere to vital safety and kinematic rules. Secondly, CATG parameterizes driving aggressiveness as a control signal during generation, enabling precise manipulation of trajectory style. Notably, on the NavSim v2 challenge, CATG achieved 2nd place with an EPDMS score of 51.31 and was honored with the Innovation Award.
format Preprint
id arxiv_https___arxiv_org_abs_2510_26292
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Beyond Imitation: Constraint-Aware Trajectory Generation with Flow Matching For End-to-End Autonomous Driving
Liu, Lin
Yu, Guanyi
Song, Ziying
Li, Junqiao
Jia, Caiyan
Jia, Feiyang
Wu, Peiliang
Luo, Yandan
Computer Vision and Pattern Recognition
Planning is a critical component of end-to-end autonomous driving. However, prevailing imitation learning methods often suffer from mode collapse, failing to produce diverse trajectory hypotheses. Meanwhile, existing generative approaches struggle to incorporate crucial safety and physical constraints directly into the generative process, necessitating an additional optimization stage to refine their outputs. To address these limitations, we propose CATG, a novel planning framework that leverages Constrained Flow Matching. Concretely, CATG explicitly models the flow matching process, which inherently mitigates mode collapse and allows for flexible guidance from various conditioning signals. Our primary contribution is the novel imposition of explicit constraints directly within the flow matching process, ensuring that the generated trajectories adhere to vital safety and kinematic rules. Secondly, CATG parameterizes driving aggressiveness as a control signal during generation, enabling precise manipulation of trajectory style. Notably, on the NavSim v2 challenge, CATG achieved 2nd place with an EPDMS score of 51.31 and was honored with the Innovation Award.
title Beyond Imitation: Constraint-Aware Trajectory Generation with Flow Matching For End-to-End Autonomous Driving
topic Computer Vision and Pattern Recognition
url https://arxiv.org/abs/2510.26292