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News1 min read·2026-09-18

DiffAdapterVLA embeds trajectory tokens into driving VLM late layers, low latency and few parameters on NAVSIM

DiffAdapterVLA injects explicit trajectory tokens into the late layers of a driving vision-language model, with authors self-reporting high closed-loop planning quality, low latency and few trainable parameters on NAVSIM.

ImportanceLocalEvidenceE2 unreplicated

2026-09-23 12:00 GMT+8

DiffAdapterVLA injects explicit trajectory tokens into the late layers of a driving vision-language model, letting trajectory states co-evolve with driving conditions during the backbone's forward computation while training only lightweight adapter modules; the authors self-report high closed-loop planning quality, low latency and few trainable parameters on the NAVSIM benchmark.

Previous approaches did not let trajectory states co-evolve with driving conditions in the backbone's forward computation, making it hard to balance planning quality, latency and parameter count.

The measurement was done first-party by Changxin Lu and seven co-authors: on the NAVSIM benchmark they self-report high closed-loop planning quality, low latency and few trainable parameters.

Boundary: results are author self-reported with no third-party reproduction yet; the preprint was submitted to arXiv on September 14 (v2 updated on the 16th, arXiv:2609.15322).

Sources

  • arxiv.orgOriginal source↗
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