Abstract:End-to-end planning systems for autonomous driving are rapidly improving, especially in closed-loop simulation environments like CARLA. Many such driving systems either do not consider uncertainty as part of the plan itself or obtain it by using specialized representations that do not generalize. In this paper, we propose EnDfuser, an end-to-end driving system that uses a diffusion model as the trajectory planner. EnDfuser effectively leverages complex perception information like fused camera and LiDAR features, through combining attention pooling and trajectory planning into a single diffusion transformer module. Instead of committing to a single plan, EnDfuser produces a distribution of candidate trajectories (128 for our case) from a single perception frame through ensemble diffusion. By observing the full set of candidate trajectories, EnDfuser provides interpretability for uncertain, multimodal future trajectory spaces. Using this information we design a simplistic safety-rule that improves the system's driving score by 1.7% on the LAV benchmark. Our findings suggest that ensemble diffusion, used as a drop-in replacement for traditional point-estimate trajectory planning modules, can contribute to an uncertainty-aware decision making process in End-to-End driving policies by modeling the uncertainty of the posterior trajectory distribution.
| Comments: | Accepted at NLDL 2026 |
| Subjects: | Robotics (cs.RO); Computer Vision and Pattern Recognition (cs.CV) |
| Cite as: | arXiv:2506.00560 [cs.RO] |
| (or arXiv:2506.00560v2 [cs.RO] for this version) | |
| https://doi.org/10.48550/arXiv.2506.00560 arXiv-issued DOI via DataCite |
From: Florian Wintel [view email]
[v1]
Sat, 31 May 2025 13:33:27 UTC (2,834 KB)
[v2]
Fri, 22 May 2026 14:13:18 UTC (6,307 KB)
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