Why drivers use cell phones and support legislation to restrict this practice.

Sanbonmatsu, David M.; Strayer, David L.; Behrends, Arwen A.; Medeiros-Ward, Nathan; Watson, Jason M. · 2017 · ROSA P / Mountain Plains Consortium

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Summary

This study investigates the psychological motivations behind why drivers use cell phones while driving and why they simultaneously support legislation restricting this behavior. The authors address the paradox of widespread public support for bans on distracted driving despite high rates of personal engagement in the practice. The research aims to determine if drivers’ self-assessed ability to multitask predicts their usage and whether their support for laws is driven by perceived risks to public safety. The researchers conducted a survey and experimental study with 249 University of Utah undergraduates who owned cell phones and drove occasionally. Participants completed questionnaires assessing their driving attitudes, self-reported frequency of cell phone use, perceived benefits and risks of their own and others’ cell phone use, and support for restrictive legislation. To measure actual multitasking ability, participants performed the Operation Span (OSPAN) task, which requires simultaneous memory recall and math verification. Regression analyses were used to identify predictors of self-reported cell phone use and legislative support. The results revealed that the majority of participants used cell phones while driving, yet most also supported legislation to restrict the practice. Drivers reported using phones for benefits such as connecting with friends and completing work, while acknowledging risks but downplaying them relative to drunk driving. Crucially, participants significantly overestimated their ability to drive safely while distracted compared to the general population. However, there was no significant correlation between these self-assessments and actual multitasking performance on the OSPAN task, indicating that drivers’ confidence was not grounded in objective ability. Regression analyses showed that self-reported cell phone use was predicted by perceived personal benefits and the belief that one is capable of driving safely while distracted. Conversely, support for legislation was strongly predicted by the perceived threat to public safety posed by *others’* cell phone usage and by lower perceived benefits of the behavior. The study concludes that drivers engage in a "do as I say, not as I do" hypocrisy, driven by an illusion of personal competence. Drivers believe they can manage the cognitive load of talking and driving, while viewing others as incapable and dangerous. This disparity explains the broad support for restrictions: drivers support laws primarily because they perceive others’ usage as a significant public safety threat, not because they view their own behavior as equally risky. The findings highlight a disconnect between subjective confidence and objective multitasking ability, suggesting that interventions relying on self-assessment may be ineffective.

Key finding

Support for legislation to restrict cell phone use while driving is strongly predicted by the perceived threat to public safety presented by others' usage, while self-reported usage is predicted by the belief in one's own capability to drive safely while distracted.

Methodology

survey

Sample size: 249

Provenance

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archive success 1 2026-05-23
extract success cached 2 2026-06-10
clean success 1 2026-06-01
chunk success 1 2026-06-01
embed success 1 2026-06-02
enrich success 1 2026-05-23
promote success 1 2026-05-23
summarize success llm qwen3.6-27b-prismaquant summ-v5 3 2026-06-10
tag success vector_similarity 19 2026-06-11
verify partial 2 2026-06-10

Summary generated by qwen3.6-27b-prismaquant on 2026-06-10; verification: verified_with_issues.

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