Terao, Kenshikimyo; Mandel, Ilan; Franchi, Matt; Yang, Chishang; Colley, Mark; Ju, Wendy; (2025) Evaluating Interfaces for Non-Driving Related Tasks While Operating an E-scooter. In: Proceedings of the 17th International Conference on Automotive User Interfaces and Interactive Vehicular Applications. (pp. pp. 139-151). ACM

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Abstract

Micromobility vehicles, such as e-scooters, provide ecological and financial advantages over automotive transportation. However, as with car drivers, micromobility users often perform non-driving related tasks (NDRTs), interacting with stereo controls or navigation tasks, which can lead to accidents. It remains unclear what control interfaces are appropriate and safe for micromobility. We evaluated six interface modalities for NDRTs and conducted a within-subjects study with 35 participants (yielding N=210 observations) in an e-scooter simulator to compare modality safety and preferences. Our results align with existing work on gaze and tactility in the automotive NDRTs context. However, unique to e-scooters, interfaces that required users to alter their grip on the handlebars were less preferred as they compromised stability. Social comfort also emerged as a critical factor due to concerns about public visibility. This work aims to encourage the design of safer, more socially acceptable interfaces for e-scooters and other emerging micromobility vehicles.

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