• Title/Summary/Keyword: Ubiquitous Transportation Sensor Network

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Trends of RFID Technology and Applications for Marine Information Systems (전자태그의 기술동향과 해양정보시스템에의 활용방안에 관한 연구)

  • Jeong, Jung-Sik;Jong, Jae-Yong
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.11 no.1 s.22
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    • pp.39-45
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    • 2005
  • Recently, RFID technology play a key role to implement ubiquitous sensor network(USN). In this paper, we introduce trends of RFID technology, standardization, and then its applications. The purpose of this work is to suggest prosperous applications of RFID, which is applicable on marine information system, such as ship inventory management, management of container and its contents, sensing of environments within cargo hold, management of fishery boats. In case that RFID technology is utilized on marine information systems, it makes safety at sea and marine environments protection.

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The Research for USN Applications of Parking Guidance and Information System (주차안내정보시스템의 USN기술 적용을 위한 연구)

  • Lee, Keun-Hee;Kum, Ki-Jung;Son, Seung-Neo
    • Journal of Korean Society of Transportation
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    • v.30 no.1
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    • pp.85-101
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    • 2012
  • Parking guidance and information systems have been introduced to response the inefficient and inconvenience use of parking facilities. While advanced countries have reached effective use of parking guidance information system, the Republic of Korea has yet suffered from the lack of full use of advanced technologies. This study proposes an algorithm designed for a systems utilizing the USN technologies. A field test was performed. The test results showed that information from the proposed system is much reliable when compared to the one from the existing.

Developing algorithms for providing evacuation and detour route guidance under emergency conditions (재난.재해 시 대피 및 우회차량 경로 제공 알고리즘 개발)

  • Yang, Choong-Heon;Son, Young-Tae;Yang, In-Chul;Kim, Hyun-Myoung
    • International Journal of Highway Engineering
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    • v.11 no.3
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    • pp.129-139
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    • 2009
  • The transportation network is a critical infrastructure in the event of natural and human caused disasters such as rainfall, snowfall, and terror and so on. Particularly, the transportation network in an urban area where a large number of population live is subject to be negatively affected from such events. Therefore, efficient traffic operation plans are required to assist rapid evacuation and effective detour of vehicles on the network as soon as possible. Recently, ubiquitous communication and sensor network technology is very useful to improve data collection and connection related emergency information. In this study, we develop a specific algorithm to provide evacuation route and detour information only for vehicles under emergency situations. Our algorithm is based on shortest path search technique and dynamic traffic assignment. We perform the case study to evaluate model performance applying hypothetical scenarios involved terror. Results show that the model successfully describe effective path for each vehicle under emergency situation.

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The Road Reservation Scheme in Emergency Situation for Intelligent Transportation Systems (지능형 교통 시스템을 위한 긴급 상황에서의 도로 예약 방식)

  • Yoo, Jae-Bong;Park, Chan-Young
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.36 no.11B
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    • pp.1346-1356
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    • 2011
  • Transportation has been playing important role in our society by providing for people, freight, and information. However, it cuts its own throat by causing car accidents, traffic congestion, and air pollution. The main cause of these problems is a noticeable growth in the number of vehicles. The easiest way to mitigate these problems is to build new road infrastructures unless resources such as time, money, and space are limited. Therefore, there is a need to manage the existing road infrastructures effectively and safely. In this paper, we propose a road reservation scheme that provides fast and safe response for emergency vehicles using ubiquitous sensor network. Our idea is to allow emergency vehicle to reserve a road on a freeway for arriving to the scene of the accident quickly and safely. We evaluate the performance by three reservation method (No, Hop, and Full) to show that emergency vehicles such as ambulances, fire trucks, or police cars can rapidly and safely reach their destination. Simulation results show that the average speed of road reservation is about 1.09 ~ 1.20 times faster than that of non-reservation at various flow rates. However, road reservation should consider the speed of the emergency vehicle and the road density of the emergency vehicle processing direction, as a result of Hop Reservation and Full Reservation performance comparison analysis. We confirm that road reservation can guarantee safe driving of emergency vehicles without reducing their speed and help to mitigate traffic congestion.