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Pedestrian signalization and the risk of pedestrian-motor vehicle collisions in Lima, Peru
Journal article   Open access   Peer reviewed

Pedestrian signalization and the risk of pedestrian-motor vehicle collisions in Lima, Peru

D. Alex Quistberg, Thomas D. Koepsell, Linda Ng Boyle, J. Jaime Miranda, Brian D. Johnston and Beth E. Ebel
Accident analysis and prevention, v 70, pp 273-281
Sep 2014
DOI: https://doi.org/10.1016/j.aap.2014.04.012
PMID: 24821630
Featured in Collection :   UN Sustainable Development Goals @ Drexel
url
https://europepmc.org/articles/pmc4097079View
Accepted (AM)Open Access (License Unspecified),  Open

Abstract

Built environment Pedestrian signals Pedestrian-motor vehicle collisions Pedestrians Traffic signals Peru
• We examine pedestrian-motor vehicle collisions and signalization in Lima, Peru. • Some types of pedestrian signals were associated pedestrian collisions. • Longer crossing times for pedestrians were associated with pedestrian collisions. • Lack of signal effectiveness may be due to low compliance with signalization. Safe walking environments are essential for protecting pedestrians and promoting physical activity. In Peru, pedestrians comprise over three-quarters of road fatality victims. Pedestrian signalization plays an important role managing pedestrian and vehicle traffic and may help improve pedestrian safety. We examined the relationship between pedestrian-motor vehicle collisions and the presence of visible traffic signals, pedestrian signals, and signal timing to determine whether these countermeasures improved pedestrian safety. A matched case-control design was used where the units of study were crossing locations. We randomly sampled 97 control-matched collisions (weighted N=1134) at intersections occurring from October, 2010 to January, 2011 in Lima. Each case-control pair was matched on proximity, street classification, and number of lanes. Sites were visited between February, 2011 and September, 2011. Each analysis accounted for sampling weight and matching and was adjusted for vehicle and pedestrian traffic flow, crossing width, and mean vehicle speed. Collisions were more common where a phased pedestrian signal (green or red-light signal) was present compared to no signalization (odds ratio [OR] 8.88, 95% Confidence Interval [CI] 1.32–59.6). A longer pedestrian-specific signal duration was associated with collision risk (OR 5.31, 95% CI 1.02–9.60 per 15-s interval). Collisions occurred more commonly in the presence of any signalization visible to pedestrians or pedestrian-specific signalization, though these associations were not statistically significant. Signalization efforts were not associated with lower risk for pedestrians; rather, they were associated with an increased risk of pedestrian-vehicle collisions.

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23 citations in Web of Science
26 citations in Scopus

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UN Sustainable Development Goals (SDGs)

This publication has contributed to the advancement of the following goals:

#11 Sustainable Cities and Communities

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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Ergonomics
Public, Environmental & Occupational Health
Social Sciences, Interdisciplinary
Transportation
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