Mobile phone use while driving indicators based on naturalistic driving data
DOI:
https://doi.org/10.58922/transportes.v33.e3053Keywords:
Driver distraction. Speed adaptation. Risk compensation.Abstract
The use of mobile phones while driving is a known risk factor for road crashes. Little is known about the characteristics of mobile phone use as a secondary task while driving in Brazil. The aim of this study was to derive road safety performance indicators related to mobile phone use while driving from Brazilian naturalistic driving data. The methodology involved an observational study analyzing video footage from 32 drivers in Curitiba and the Metropolitan Region. The most common type of use was checking/browsing: 44.96% of all instances. The average frequency of use was 8.71 uses per hour, with an average duration of 55.34 seconds per use. On average, drivers reduced their speed by 6.32 km/h after initiating use, and increased it by 5.11 km/h after completing the task. Checking/browsing was the type of use associated with the greatest speed adaptation, showing an average reduction of 7.39 km/h at the start, and an average increase of 3.55 km/h at the end. In conclusion, speed adaptation during mobile phone use was related to the complexity of the activity, based on the required manual, visual, and cognitive demands. However, drivers did not perceive the increased risk of making a call or sending a voice message, highlighting the need for more effective measures to reduce engagement in secondary tasks while driving.
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