SPAT enables rigorous evaluation of social perception in mixed traffic, supporting safer and more cooperative interaction between human and automated road users.

Abstract

Automated vehicles are nearing deployment maturity, yet effective interaction in mixed traffic hinges on reliable social judgement. We introduce SPAT, a twelve‑item semantic‑differential scale that quantifies perceived prosocial and aggressive behaviour across road users, including automated vehicles. Exploratory and confirmatory factor analyses (N = 318) established a robust three‑factor structure – socialness, predictability, and awareness. External validity was demonstrated in a controlled test‑track study, where SPAT captured drivers’ perception shifts in response to an automated vehicle’s intent display. SPAT offers a concise tool for researchers and practitioners to assess social‑behaviour perception and inform interface or policy design.

BibTeX

@inproceedings{SahinIppoliti2018SPAT,
  author       = {Şahin Ippoliti, Hatice and Colley, Mark and Dey, Debargha and
                  Wintersberger, Philipp and Sadeghian, Shadan and Löcken, Andreas and
                  Matviienko, Andrii and Habibovic, Azra and Müller, Heiko and
                  Hildebrandt, Andrea and Boll, Susanne},
  title        = {{SPAT: Situational Prosocial and Aggressive Behavior Perception in Traffic Scale}},
  booktitle    = {Proceedings of AutomotiveUI ’25},
  year         = {2025},
  publisher    = {ACM},
  address      = {New York, NY, USA},
  url		   = {https://doi.org/10.1145/3744333.3747812},
  doi		   = {10.1145/3744333.3747812}
}