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Title:

Traffic Conflict Investigation Using Geo-referenced Stereovision. A Case Study on Bus-Pedestrian Interaction

Accession Number:

01518547

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

The Traffic Conflict Technique (TCT) was developed as “surrogate measure of road safety” by using near-accident indicators based on the measurement of the spatial and temporal proximity of road users. Traditionally, TCT focuses on a specific site by the way of manually or automated supervision. Nowadays the development of In-Vehicle (IV) technologies provide new opportunities for monitoring driver behavior and interaction with other road users. In this paper a novel IV stereo-vision and GPS system for traffic conflict investigation is presented. The system employs geo-referenced stereo sequences and tracking procedure to provide much greater information regarding pre-conflict and conflict events than what is currently available. As case study, an urban Bus was equipped with a prototype of the system and a trial of some runs in the city of Catania (Italy) was conducted analyzing conflicts with pedestrian crossing in front of the Bus. Experimental results showed the performance of the system for collection of data that can be used to get suitable Traffic Conflict measures. Specifically, a Risk indicator of the conflict between pedestrians and vehicles was developed and how this measure can be used for evaluation of both probability and severity of the collision is proved. Finally, examples of application of the procedure for Risk maps output and driver warning systems are presented.

Supplemental Notes:

This paper was sponsored by TRB committee AND30 Simulation and Measurement of Vehicle and Operator Performance. Alternate title: Traffic Conflict Investigation Using Georeferenced Stereovision: Case Study on Bus-Pedestrian Interaction.

Monograph Accession #:

01503729

Report/Paper Numbers:

14-3819

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Cafiso, Salvatore
Di Graziano, Alessandro
Pappalardo, Giuseppina

Pagination:

16p

Publication Date:

2014

Conference:

Transportation Research Board 93rd Annual Meeting

Location: Washington DC
Date: 2014-1-12 to 2014-1-16
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; Maps; Photos; References; Tables

Geographic Terms:

Catania (Italy)

Subject Areas:

Data and Information Technology; Pedestrians and Bicyclists; Public Transportation; Safety and Human Factors; I80: Accident Studies

Source Data:

Transportation Research Board Annual Meeting 2014 Paper #14-3819

Files:

TRIS, TRB, ATRI

Created Date:

Jan 27 2014 3:19PM