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Title:

Vehice-Pedestrian Accidents at Signalized Intersections: Exposure Measures and Geometric Designs

Accession Number:

01366175

Record Type:

Component

Abstract:

Pedestrian safety is a topic of growing concern. To better understand the environmental factors (traffic controls, geometric and land use factors) associated with pedestrian-vehicular accidents, this paper presents a methodology for quantifying pedestrian accidents at signalized intersections. For this purpose, a rich and unique intersection inventory with geometry and accident data was built and analyzed comprising a very large sample of 1,871 signalized intersections across the island of Montreal, Canada. To investigate the impact of vehicle movements, three separate definitions of risk exposure were used: completely aggregated flows, motor-vehicle flows aggregated by movement type (left, right and through movements) and disaggregated flows analyzing potential conflicts between motor vehicles and pedestrians. Various negative binomial models were fitted to the data with and without geometric design characteristics. Among other findings, vehicular traffic is found to be the main contributing factor in accordance with previous works. It was a bit surprising to see that through vehicular movements at intersections had a greater effect on accident rates than left and right turns. A separate analysis was conducted to incorporate geometric variables into the risk exposure models. Significant geometric properties included pedestrian phasing, exclusive left turn lanes, commercial entrances and exits, total crossing distance, curb extension and number of lanes. Exclusive left turn lanes, pedestrian phasing and curb extensions were found to decrease pedestrian accidents, whereas longer crossing distances, number of lanes and more commercial entrances and exits were found to significantly increase pedestrian-vehicular accidents after controlling for vehicular and pedestrian flows.

Monograph Accession #:

01362476

Report/Paper Numbers:

12-3208

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Fernandes, David
Miranda-Moreno, Luis F
Morency, Patrick

Pagination:

26p

Publication Date:

2012

Conference:

Transportation Research Board 91st Annual Meeting

Location: Washington DC, United States
Date: 2012-1-22 to 2012-1-26
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Geographic Terms:

Montreal (Canada)

Subject Areas:

Highways; Pedestrians and Bicyclists; Safety and Human Factors; I82: Accidents and Transport Infrastructure

Source Data:

Transportation Research Board Annual Meeting 2012 Paper #12-3208

Files:

TRIS, TRB

Created Date:

Feb 8 2012 5:15PM