Safety Evaluation of Pedestrian Countdown Signals

Srinivasan, Raghavan; Lan, Bo; Carter, Daniel; Smith, Sarah; Signor, Kari; Persaud, Bhagwant; United States. Federal Highway Administration. Office of Safety Research and Development

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Safety Evaluation of Pedestrian Countdown Signals

2019-11-01
By Srinivasan, Raghavan ; Lan, Bo ; Carter, Daniel ; ...

[PDF-677.97 KB]

English

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Creators:

Srinivasan, Raghavan ; Lan, Bo ; Carter, Daniel ; Smith, Sarah ; Signor, Kari ; ... More +

Srinivasan, Raghavan ; Lan, Bo ; Carter, Daniel ; Smith, Sarah ; Signor, Kari ; Persaud, Bhagwant Less -
Corporate Creators:

United States. Federal Highway Administration. Office of Safety Research and Development
Contributors:

Amjadi, Roya
Corporate Contributors:

VHB/Vanasse Hangen Brustlin, Inc. ; University of North Carolina (System). Highway Safety Research Center ; Turner-Fairbank Highway Research Center

VHB/Vanasse Hangen Brustlin, Inc. ; University of North Carolina (System). Highway Safety Research Center ; Turner-Fairbank Highway Research Center Less -
Subject/TRT Terms:

[+]

Empirical Bayesian Evaluation Pedestrian Safety Safety Evaluations Safety Improvements Signalized Intersections Traffic Safety
Publication/ Report Number:

FHWA-HRT-19-045
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Safety Evaluation
Contracting Officer:

Amjadi, Roya
Corporate Publisher:

United States. Federal Highway Administration. Office of Safety Research and Development
Abstract:

A before-after empirical Bayes analysis was performed using data from 115 treated intersections in Charlotte, NC, and 218 treated intersections in Philadelphia, PA, to evaluate the safety effects of pedestrian countdown signals (PCSs). Additionally, the evaluation included 136 reference intersections in Charlotte, NC, and 597 reference intersections in Philadelphia, PA. The project team also investigated the possibility of using data from two additional cities, but the data from those cities could not be used in this evaluation because of unknown PCS installation dates, lack of pedestrian volume, and crash data reliability concerns. Following the implementation of PCSs, total crashes decreased by approximately 8 percent, and rear-end crashes decreased by approximately 12 percent. These reductions were statistically significant at the 95 percent confidence level. Pedestrian crashes decreased by about 9 percent, and this reduction was statistically significant at the 90 percent confidence level. The economic analysis revealed a benefit-cost ratio of 23, with a low of 13 and a high of 32.
Format:

PDF
Funding:

DTFH61-13-D-0001
Collection(s):

Federal Highway Administration
Main Document Checksum:

[+]

urn:sha256:1c93bdfab10d9c30b4c56eefff8d5841c81eb32739c4cb98c47d2905b7e1783e
Download URL:

https://rosap.ntl.bts.gov/view/dot/42730/dot_42730_DS1.pdf
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Safety Evaluation of Pedestrian Countdown Signals

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