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The impact of pedestrian countdown signals on pedestrian–motor vehicle collisions: a quasi-experimental study
OBJECTIVE: To determine whether pedestrian countdown signals (PCS) reduce pedestrian–motor vehicle collisions in the city of Toronto, Canada. METHODS: A quasi-experimental study design was used to evaluate the effect of PCS on the number of pedestrian–motor vehicle collisions in the city of Toronto,...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BMJ Group
2011
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3406612/ https://www.ncbi.nlm.nih.gov/pubmed/22157206 http://dx.doi.org/10.1136/injuryprev-2011-040173 |
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author | Camden, Andi Buliung, Ron Rothman, Linda Macarthur, Colin Howard, Andrew |
author_facet | Camden, Andi Buliung, Ron Rothman, Linda Macarthur, Colin Howard, Andrew |
author_sort | Camden, Andi |
collection | PubMed |
description | OBJECTIVE: To determine whether pedestrian countdown signals (PCS) reduce pedestrian–motor vehicle collisions in the city of Toronto, Canada. METHODS: A quasi-experimental study design was used to evaluate the effect of PCS on the number of pedestrian–motor vehicle collisions in the city of Toronto, from January 2000 to December 2009. Each intersection acted as its own control. We compared the number of pedestrian–motor vehicle collisions per intersection-month before and after the intervention. Stratified models were used to evaluate effect modification by pedestrian age, injury severity and location (urban vs inner suburbs). Poisson regression analysis with repeated measures (generalised estimating equations) was used to estimate the RR and 95% CI. RESULTS: The analysis included 9262 pedestrian–motor vehicle collisions at 1965 intersections. The RR of collisions after PCS installation was 1.014 (95% CI 0.958 to 1.073), indicating no statistically significant effect of PCS on collisions. There was no evidence to suggest effect modification between PCS and collisions by age, injury severity or location. CONCLUSION: The installation of PCS at 1965 signalised intersections in Toronto did not reduce the number of pedestrian–motor vehicle collisions at these intersections. |
format | Online Article Text |
id | pubmed-3406612 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | BMJ Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-34066122012-07-30 The impact of pedestrian countdown signals on pedestrian–motor vehicle collisions: a quasi-experimental study Camden, Andi Buliung, Ron Rothman, Linda Macarthur, Colin Howard, Andrew Inj Prev Original Article OBJECTIVE: To determine whether pedestrian countdown signals (PCS) reduce pedestrian–motor vehicle collisions in the city of Toronto, Canada. METHODS: A quasi-experimental study design was used to evaluate the effect of PCS on the number of pedestrian–motor vehicle collisions in the city of Toronto, from January 2000 to December 2009. Each intersection acted as its own control. We compared the number of pedestrian–motor vehicle collisions per intersection-month before and after the intervention. Stratified models were used to evaluate effect modification by pedestrian age, injury severity and location (urban vs inner suburbs). Poisson regression analysis with repeated measures (generalised estimating equations) was used to estimate the RR and 95% CI. RESULTS: The analysis included 9262 pedestrian–motor vehicle collisions at 1965 intersections. The RR of collisions after PCS installation was 1.014 (95% CI 0.958 to 1.073), indicating no statistically significant effect of PCS on collisions. There was no evidence to suggest effect modification between PCS and collisions by age, injury severity or location. CONCLUSION: The installation of PCS at 1965 signalised intersections in Toronto did not reduce the number of pedestrian–motor vehicle collisions at these intersections. BMJ Group 2011-12-10 2012-08 /pmc/articles/PMC3406612/ /pubmed/22157206 http://dx.doi.org/10.1136/injuryprev-2011-040173 Text en © 2012, Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions. This is an open-access article distributed under the terms of the Creative Commons Attribution Non-commercial License, which permits use, distribution, and reproduction in any medium, provided the original work is properly cited, the use is non commercial and is otherwise in compliance with the license. See: http://creativecommons.org/licenses/by-nc/2.0/ and http://creativecommons.org/licenses/by-nc/2.0/legalcode. |
spellingShingle | Original Article Camden, Andi Buliung, Ron Rothman, Linda Macarthur, Colin Howard, Andrew The impact of pedestrian countdown signals on pedestrian–motor vehicle collisions: a quasi-experimental study |
title | The impact of pedestrian countdown signals on pedestrian–motor vehicle collisions: a quasi-experimental study |
title_full | The impact of pedestrian countdown signals on pedestrian–motor vehicle collisions: a quasi-experimental study |
title_fullStr | The impact of pedestrian countdown signals on pedestrian–motor vehicle collisions: a quasi-experimental study |
title_full_unstemmed | The impact of pedestrian countdown signals on pedestrian–motor vehicle collisions: a quasi-experimental study |
title_short | The impact of pedestrian countdown signals on pedestrian–motor vehicle collisions: a quasi-experimental study |
title_sort | impact of pedestrian countdown signals on pedestrian–motor vehicle collisions: a quasi-experimental study |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3406612/ https://www.ncbi.nlm.nih.gov/pubmed/22157206 http://dx.doi.org/10.1136/injuryprev-2011-040173 |
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