Risk-Adaptive Edge--Cloud Visual Reasoning for Communication-Efficient Autonomous Driving

• URL: http://arxiv.org/abs/2608.14991v1
• Date: Sat, 15 Aug 2026 02:36:01 GMT
• Title: Risk-Adaptive Edge--Cloud Visual Reasoning for Communication-Efficient Autonomous Driving
• Abstract summary: Cloud-hosted vision-language models (VLMs) offer greater contextual reasoning capabilities than smaller onboard models.<n>We present a risk-adaptive edge-cloud architecture in which onboard traffic assessment determines when cloud reasoning is requested.
• Score: 6.115137181728187
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Cloud-hosted vision-language models (VLMs) offer greater contextual reasoning capabilities than smaller onboard models, but frequent visual uploads increase communication overhead and add network and inference latency to tactical decisions. We present a risk-adaptive edge-cloud architecture in which onboard traffic assessment determines when cloud reasoning is requested. An onboard VLM and a lightweight detector capture temporal traffic conditions and path-relative hazards for conservative local response and selective cloud access. The cloud model provides tactical advice, while validation, vehicle control, and automatic emergency braking remain local. In CARLA experiments, our method matched the task success rate of periodic cloud access while reducing cloud requests by 54.1% and recording fewer automatic emergency braking (AEB) activations. In a delayed-roadwork ablation, semantic events triggered requests before the next scheduled audit. Across three emulated network profiles, the method continued to reduce cloud traffic, although lane changes took longer than with periodic access. Onboard traffic assessment therefore served as a practical trigger for selective VLM inference in these experiments.

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