A comparison of self-nominated and actual speeds in work zones

Debnath, Ashim Kumar, Blackman, Ross, & Haworth, Narelle (2015) A comparison of self-nominated and actual speeds in work zones. Transportation Research Part F: Traffic Psychology and Behaviour, 35, pp. 213-222.

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Despite significant research on drivers’ speeding behavior in work zones, little is known about how well drivers’ judgments of appropriate speeds match their actual speeds and what factors influence their judgments. This study aims to fill these two important gaps in the literature by comparing observed speeds in two work zones with drivers’ self-nominated speeds for the same work zones. In an online survey, drivers nominated speeds for the two work zones based on photographs in which the actual posted speed limits were not revealed. A simultaneous equation modelling approach was employed to examine the effects of driver characteristics on their self-nominated speeds. The results showed that survey participants nominated lower speeds (corresponding to higher compliance rates) than those which were observed. Higher speeds were nominated by males than females, young and middle aged drivers than older drivers, and drivers with truck driving experience than those who drive only cars. Larger differences between nominated and observed speeds were found among car drivers than truck drivers. These differences suggest that self-nominated speeds might not be valid indicators of the observed work zone speeds and therefore should not be used as an alternative to observed speed data.

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ID Code: 92448
Item Type: Journal Article
Refereed: Yes
Keywords: speed perception, work zone, speeding, seemingly unrelated regression, roadworks
DOI: 10.1016/j.trf.2015.10.019
ISSN: 1873-5517
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > PUBLIC HEALTH AND HEALTH SERVICES (111700) > Environmental and Occupational Health and Safety (111705)
Divisions: Current > Research Centres > Centre for Accident Research & Road Safety - Qld (CARRS-Q)
Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Current > Schools > School of Psychology & Counselling
Copyright Owner: Copyright 2015 Elsevier Ltd.
Deposited On: 29 Jan 2016 00:40
Last Modified: 29 Feb 2016 18:27

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