The impact of mobile phone distraction on the braking behaviour of young drivers: a hazard-based duration model

Haque, Md. Mazharul and Washington, Simon (2015) The impact of mobile phone distraction on the braking behaviour of young drivers: a hazard-based duration model. Transportation Research Part C: Emerging Technologies, 50 13-27. doi:10.1016/j.trc.2014.07.011

Author Haque, Md. Mazharul
Washington, Simon
Title The impact of mobile phone distraction on the braking behaviour of young drivers: a hazard-based duration model
Journal name Transportation Research Part C: Emerging Technologies   Check publisher's open access policy
ISSN 0968-090X
Publication date 2015-01-01
Sub-type Article (original research)
DOI 10.1016/j.trc.2014.07.011
Open Access Status Not yet assessed
Volume 50
Start page 13
End page 27
Total pages 15
Place of publication Kidlington, Oxford, United Kingdom
Publisher Elsevier
Language eng
Subject 2203 Automotive Engineering
3313 Transportation
1706 Computer Science Applications
1803 Management Science and Operations Research
Abstract Braking is a crucial driving task with a direct relationship with crash risk, as both excess and inadequate braking can lead to collisions. The objective of this study was to compare the braking profile of young drivers distracted by mobile phone conversations to non-distracted braking. In particular, the braking behaviour of drivers in response to a pedestrian entering a zebra crossing was examined using the CARRS-Q Advanced Driving Simulator. Thirty-two licensed drivers drove the simulator in three phone conditions: baseline (no phone conversation), hands-free, and handheld. In addition to driving the simulator, each participant completed questionnaires related to driver demographics, driving history, usage of mobile phones while driving, and general mobile phone usage history. The drivers were 18-26. years old and split evenly by gender. A linear mixed model analysis of braking profiles along the roadway before the pedestrian crossing revealed comparatively increased decelerations among distracted drivers, particularly during the initial 20. kph of deceleration. Drivers' initial 20. kph deceleration time was modelled using a parametric accelerated failure time (AFT) hazard-based duration model with a Weibull distribution with clustered heterogeneity to account for the repeated measures experiment design. Factors found to significantly influence the braking task included vehicle dynamics variables like initial speed and maximum deceleration, phone condition, and driver-specific variables such as licence type, crash involvement history, and self-reported experience of using a mobile phone whilst driving. Distracted drivers on average appear to reduce the speed of their vehicle faster and more abruptly than non-distracted drivers, exhibiting excess braking comparatively and revealing perhaps risk compensation. The braking appears to be more aggressive for distracted drivers with provisional licenses compared to drivers with open licenses. Abrupt or excessive braking by distracted drivers might pose significant safety concerns to following vehicles in a traffic stream.
Keyword Accelerated failure time
Advanced driving simulator
Hazard analysis
Traffic safety
Young driver safety
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Civil Engineering Publications
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Citation counts: TR Web of Science Citation Count  Cited 16 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 20 times in Scopus Article | Citations
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Created: Tue, 21 Feb 2017, 13:41:13 EST by Simon Washington on behalf of Learning and Research Services (UQ Library)