Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/108088
Title: Prevalence of alcohol-impaired drivers based on random breath tests in a roadside survey in Catalonia (Spain)
Author: Alcañiz, Manuela
Guillén, Montserrat
Sánchez Moscona, Daniel
Santolino, Miguel
Llatje, Oscar
Lluis, Ramon
Keywords: Circulació
Consum d'alcohol i accidents de circulació
Enginyeria del trànsit
Traffic flow
Drinking and traffic accidents
Traffic engineering
Issue Date: Apr-2014
Publisher: Elsevier
Abstract: Sobriety checkpoints are not usually randomly located by traffic authorities. As such, information provided by non-random alcohol tests cannot be used to infer the characteristics of the general driving population. In this paper a case study is presented in which the prevalence of alcohol-impaired driving is estimated for the general population of drivers. A stratified probabilistic sample was designed to represent vehicles circulating in non-urban areas of Catalonia (Spain), a region characterized by its complex transportation network and dense traffic around the metropolis of Barcelona. Random breath alcohol concentration tests were performed during spring 2012 on 7,596 drivers. The estimated prevalence of alcohol-impaired drivers was 1.29%, which is roughly a third of the rate obtained in non-random tests. Higher rates were found on weekends (1.90% on Saturdays, 4.29% on Sundays) and especially at night. The rate is higher for men (1.45%) than for women (0.64%) and the percentage of positive outcomes shows an increasing pattern with age. In vehicles with two occupants, the proportion of alcohol-impaired drivers is estimated at 2.62%, but when the driver was alone the rate drops to 0.84%, which might reflect the socialization of drinking habits. The results are compared with outcomes in previous surveys, showing a decreasing trend in the prevalence of alcohol-impaired drivers over time
Note: Versió postprint del document publicat a: https://doi.org/10.1016/j.aap.2013.12.021
It is part of: Accident Analysis and Prevention, 2014, vol. 65, num. April, p. 131-141
Related resource: https://doi.org/10.1016/j.aap.2013.12.021
URI: http://hdl.handle.net/2445/108088
ISSN: 0001-4575
Appears in Collections:Articles publicats en revistes (Econometria, Estadística i Economia Aplicada)

Files in This Item:
File Description SizeFormat 
631033.pdf894.56 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.