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Using Crash Modification Factors To Appraise The Safety Effects Of Pedestrian Countdown Signals For Drivers

Title: Using Crash Modification Factors To Appraise The Safety Effects Of Pedestrian Countdown Signals For Drivers.
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Name(s): Kitali, Angela E., author
Sando, Thobias, author
Castro, Angelique, author
Kobelo, Doreen, author
Mwakalonge, Judith, author
Type of Resource: text
Genre: Journal Article
Text
Journal Article
Date Issued: 2018-05-01
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: Although pedestrian countdown signals (PCSs) are meant for pedestrians, they give cues to drivers on the remaining amount of green as the timer counts down. This study focuses on the evaluation of safety effectiveness of PCSs to drivers in the cities of Jacksonville and Gainesville, Florida, using the before-after study with the empirical Bayes method. This analysis explored 110 intersections with PCSs and their respective 93 comparison sites. The findings indicate that PCSs significantly improve driver safety by 8.8% reduction in total crashes, 8.0% in rear-end and 7.1% in property-damage-only crashes, where both of these results were significant at the 95% confidence level. Results for angle crashes as well as fatal and injury crashes were not significant at the 95% confidence level. Also discussed in this study are the crash modification functions developed to show the relationship between the estimated crash modification factors and total entering traffic volume at the intersection. In summary, the results suggest the usefulness of PCSs for drivers. (C) 2018 American Society of Civil Engineers.
Identifier: FSU_libsubv1_wos_000427966500001 (IID), 10.1061/JTEPBS.0000130 (DOI)
Keywords: intersections, frequency, Crash reduction factors, Crash modification factors, Empirical Bayes, green, Pedestrian countdown signals
Publication Note: The publisher’s version of record is available at https://doi.org/10.1061/JTEPBS.0000130
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000427966500001
Owner Institution: FSU
Is Part Of: Journal of Transportation Engineering Part a-Systems.
2473-2907
Issue: iss. 5, vol. 144

Choose the citation style.
Kitali, A. E., Sando, T., Castro, A., Kobelo, D., & Mwakalonge, J. (2018). Using Crash Modification Factors To Appraise The Safety Effects Of Pedestrian Countdown Signals For Drivers. Journal Of Transportation Engineering Part A-Systems. Retrieved from http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000427966500001