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LaViPlan : Language-Guided Visual Path Planning with RLVR

2025/07/17 by Hoo Oh, Oh, Hayeon
Computer Science · #Advanced Image and Video Retrieval Techniques #Automated planning and scheduling #FOS: Computer and information sciences #Fidelity #Machine Learning (cs.LG) #Motion planning #Multimodal Machine Learning Applications #Qualitative reasoning #Reinforcement learning #Robotic Path Planning Algorithms #Robotics (cs.RO) #Sampling (signal processing) #Spatial intelligence #Verifiable secret sharing

paper · pdf · doi:10.48550/arxiv.2507.12911

published in arXiv (Cornell University) (Cornell University)

openalex publication_date 2025/07/17 · openalex created_date 2025/10/18 · openalex updated_date 2026/08/05

Abstract

Out-of-distribution (OOD) scenarios in autonomous driving pose critical challenges, as planners often fail to generalize beyond their training experience, leading to unsafe or unexpected behavior. Vision-Language Models (VLMs) have shown promise in handling such scenarios by providing high-level scene understanding and user-aligned decisions. However, existing VLMs often exhibit a misalignment between their language-based reasoning and the low-level trajectories required for action-level planning. In this paper, we propose LaViPlan, a framework that leverages Reinforcement Learning with Verifiable Rewards (RLVR) to fine-tune VLMs using planning-oriented metrics. Experimental results show that LaViPlan improves planning performance across both in-domain and out-of-domain datasets. While linguistic fidelity slightly decreases after RLVR-based fine-tuning, qualitative evaluation indicates that the outputs remain coherent. We also conduct ablation studies to analyze the effects of sampling ratio and reasoning guidance, highlighting how these design choices influence performance. These findings demonstrate the potential of RLVR as a post-training paradigm for aligning language-guided reasoning with action-level planning in autonomous driving.

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