Vanishing point of attention: A platform for adaptive driver dialogue experiments

Morgan Fredriksson, Yanis Yaici, Kevin Lam, Jurgen Konigsmann, Jens Edlund


Abstract
Current in-vehicle conversational agents lack awareness of the driving situation, treating all dialogue alike regardless of cognitive demands. This paper presents a modular experimental platform that integrates the CARLA driving simulator with a real-time spatial-reasoning engine to support research on situation-aware dialogue. The system enables Wizard-of-Oz studies in which human operators control conversational agents informed by live spatial-semantic analysis of the traffic environment. As initial validation, a controlled study (n = 10) tested the platform’s sensitivity to conversational load effects, examining whether increasing conversational complexity produces a vanishing point of attention, a threshold where combined conversational and driving demands lead to a non-linear collapse in performance. Results revealed a sharp rise in collisions and missed hazard detections under high cognitive load, confirming the platform’s sensitivity to conversational strain. The platform provides a reproducible testbed for investigating how dialogue timing, content, and environmental demands interact, offering a foundation for designing adaptive, cognitively safe in-vehicle conversational systems.
Anthology ID:
2026.iwsds-1.24
Volume:
Proceedings of the 16th International Workshop on Spoken Dialogue System Technology
Month:
February
Year:
2026
Address:
Trento, Italy
Editors:
Giuseppe Riccardi, Seyed Mahed Mousavi, Maria Ines Torres, Koichiro Yoshino, Zoraida Callejas, Shammur Absar Chowdhury, Yun-Nung Chen, Frederic Bechet, Joakim Gustafson, Géraldine Damnati, Alex Papangelis, Luis Fernando D’Haro, John Mendonça, Raffaella Bernardi, Dilek Hakkani-Tur, Giuseppe "Pino" Di Fabbrizio, Tatsuya Kawahara, Firoj Alam, Gokhan Tur, Michael Johnston
Venue:
IWSDS
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
231–238
Language:
URL:
https://aclanthology.org/2026.iwsds-1.24/
DOI:
Bibkey:
Cite (ACL):
Morgan Fredriksson, Yanis Yaici, Kevin Lam, Jurgen Konigsmann, and Jens Edlund. 2026. Vanishing point of attention: A platform for adaptive driver dialogue experiments. In Proceedings of the 16th International Workshop on Spoken Dialogue System Technology, pages 231–238, Trento, Italy. Association for Computational Linguistics.
Cite (Informal):
Vanishing point of attention: A platform for adaptive driver dialogue experiments (Fredriksson et al., IWSDS 2026)
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PDF:
https://aclanthology.org/2026.iwsds-1.24.pdf