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dc.contributor.authorWong, Graceen_US
dc.contributor.authorWong, Yiik Diewen_US
dc.identifier.citationWong, G. & Wong, Y. D. (2022). Young male motorcycle rider perception response times to abrupt- and gradual-onset hazards. Accident Analysis and Prevention, 165, 106519-.
dc.description.abstractResponse time (RT) measures in crash reconstruction are inherently constrained by the need to define a start point (onset). In straight-forward situations where the hazard appears abruptly from behind an obstruction (abrupt onset), hazard onset is typically defined as when the hazard is first visible to the motorist. In contrast, in scenarios where there is no clearly defined point of entry (gradual onset), and the potential hazard gradually transitions to an immediate hazard, the onset point is more ambiguous. In this study, a reasonable hazard onset was proposed for measuring RTs of motorcycle riders to gradual-onset hazards, following which the RTs to abrupt- and gradual-onset hazards were determined and compared. A study on motorcycle rider RTs was conducted in Singapore in which a sample of young male adults (licensed riders with more than one year's effective riding experience, and unlicensed subjects) were equipped with eye tracking glasses and were presented with two pairs of abrupt-/ gradual-onset hazard scenarios on a simple motorcycle simulator. Their RTs were recorded. Initial deviation from the straight path (start of turning manoeuvre) of the intruding hazard vehicle was determined to be a more appropriate onset (start point when measuring RTs) for gradual-onset hazards when compared with referencing the onset against travel lane incursions. Participants generally took longer to respond to gradual-onset hazards than abrupt-onset hazards. Unlicensed subjects tended to underperform relative to licensed riders. The findings from this study contribute to the literature in the relatively novel field of motorcycle RTs and should be of interest to crash reconstructionists as well road safety professionals in designing road operations.en_US
dc.relation.ispartofAccident Analysis and Preventionen_US
dc.rights© 2021 Elsevier Ltd. All rights reserved.en_US
dc.subjectEngineering::Civil engineeringen_US
dc.titleYoung male motorcycle rider perception response times to abrupt- and gradual-onset hazardsen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Civil and Environmental Engineeringen_US
dc.contributor.organizationHealth Sciences Authorityen_US
dc.subject.keywordsPerception Response Timeen_US
dc.subject.keywordsMotorcycle Rideren_US
dc.description.acknowledgementThis study is part of the first author’s master’s degree research thesis at the Nanyang Technological University Singapore (NTU), and is financially supported by the Health Sciences Authority (Singapore) [grant number HSARSG2018008].en_US
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