A Feasibility Study on Crash Avoidance at Four-Way Stop-Sign-Controlled Intersections Using Wireless Sensor Networks

Do Hyun KIM  Kyoung Ho CHOI  Kyeong Tae KIM  Ki Joune LI  

IEICE TRANSACTIONS on Information and Systems   Vol.E92-D   No.5   pp.1190-1193
Publication Date: 2009/05/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.E92.D.1190
Print ISSN: 0916-8532
Type of Manuscript: LETTER
Category: Networks
wireless sensor networks,  four-way stop-sign-controlled intersection,  crash avoidance,  magnetic sensors,  

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In this letter, we propose a novel approach using wireless sensor networks (WSNs) to enhance the safety and efficiency of four-way stop-sign-controlled (FWSC) intersections. The proposed algorithm provides right of way (RoW) and crash avoidance information by means of an intelligent WSN system. The system is composed of magnetic sensors, embedded in the center of a lane, with relay nodes and a base station placed on the side of the road. The experimental results show that the vehicle detection accuracy is over 99% and the sensor node battery life expectancy is over 3 years for traffic of 5,800 vehicles per day. For the traffic application we consider, a strong effect is observed as the projected conflict rate was reduced by 72% compared to an FWSC intersection operated with only driver perception.