• Journal of Korean Society of Transportation
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• v.29 no.4
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• pp.17-28
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• 2011

This study proposed a speed management strategy for the enhancement of traffic safety on freeways. A novel feature of the proposed strategy is to provide desirable speed information to individual vehicles. A microscopic traffic simulator, VISSIM, was used for the performance evaluation. Vehicle trajectory data were used to evaluate the various speed management scenarios including the different levels of proportions of heavy vehicles. The proposed speed management strategy would be a useful precursor for developing an effective traffic control and operations system to prevent traffic accidents on freeways.

• Journal of the Korea Society of Computer and Information
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• v.15 no.3
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• pp.99-109
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• 2010

Since introduced in 1997, the transportation card system in Korea has been developed up to the world-top-tier technical level and gradually implemented in many other countries. Especially, the public transportations are significantly considered in terms of reducing greenhouse gas emission and environment pollution. In addition, a nation-wide transportation card system will be feasibly completed until 2013. However, for overcoming user's inconvenience, the unmanned sales/charging machines of the cards should be urgently required. In this paper, a new integrated operating system for unmanned sales/charging machines of such cards is designed and implemented by analyzing problems of the existing machines. The proposed system is hierarchically composed of multiple modules; machine initialization, work finishing, sales, charging, A/S handling, and management modules. We established and operated this machine in Seoul and Gyeonggi region. This research demonstrates that spread of the user-friendly integrated operating system improve user's convenience especially with respect to interoperability among transportation means and their areas.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2004.04a
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• pp.567-570
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• 2004

기존의 엘리베이터 시스템은 모든 교통 상황에 대해서 고정된 속도 패턴을 사용함으로써 교통량 변화에 다양한 속도 패턴을 제공 할 수 없었다. 운송 속도와 승차감은 엘리베이터 속도 패턴을 결정하기 위한 두개의 중요한 요소이다. 기동과 정지 시에 변속 충격을 줄이기 위해서 가속과 감속 시간이 적절히 조정되어졌다. 운송능력을 향상시키기 위해서 교통량 변화에 맞추어 저크를 조정하였고 이와 같은 방법으로 6개의 속도 패턴 곡선과 엘리베이터의 속도 제어를 위해서 뉴로 퍼지 시스템을 구현하였다. 구현된 뉴로 퍼지 시스템은 2개의 입력변수와 1개의 출력을 가진 시스템이다. 전반부는 교통량의 변화를 나타내며 후반부는 입력에 대응되는 속도 패턴을 적용시켰다.

• Journal of Korean Society of Transportation
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• v.25 no.4
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• pp.57-66
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• 2007

According to the rapid economic growth and the escalation of recreational tourism activities due to the change of job and working patterns, currently various traffic problems often occur in tourist areas. As tourist traffic, contrary to general traffic, is not regional but rather from outside the area of interest, it is hard to grasp the traffic situation surrounding the tourist area. Furthermore, since the traffic is concentrated during a limited tourist season, it is difficult to examine and solve the problem. In this study, in order to test the feasibility of introducing a traffic transfer system to reduce congestion in tourist areas, the authors considered the differences in traffic congestion between typical and tourist seasons and designed a willingness to pay model. The willingness to pay amount for a shuttle bus fare is assumed as 1,430 Won and 1,650 Won is assumed for a transfer parking charge. These amounts were slightly above the current bus fare in the study area, but many people thought that the introduction of a traffic transfer system would help to relieve the traffic congestion approaching the tourist area and to develop tourism resources. As the willingness to pay appeared high from the persons used in this study, it was indirectly confirmed that the introduction of a traffic transfer system would be a step in the right direction.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.7 no.1
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• pp.92-100
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• 2008

The existing transportation systems is emerged as a major obstacle to solve the problems such as a traffic jam and the increasing cost for a distribution and a traffic safety. In hun, ITS targeting intellectual vehicles and transportation infrastructure like road and signals is getting more important and the standards of ITS wireless communication is also getting attention. New traffic control strategies are being developed to utilize real-time traffic information collected by detection method using ITS wireless technology. Especially, DSRC system is being expanded wit ETCS and the use of OBU is spreading. These infrastructures will have much influence on ITS industry and a profound study on the method of utilizing a present infrastructure is going on in various fields. The optimum traffic signal control system using quality real-time information through these infrastructure is under development and so is WISDOM. Accordingly, this paper proposes communication protocol utilizing DSRC to collect real-time traffic information in WISDOM.

• 한국ITS학회:학술대회논문집
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• 2003.11a
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• pp.159-164
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• 2003

• Journal of the Korea Society of Computer and Information
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• v.16 no.1
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• pp.183-189
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• 2011

This paper suggests a user based OST(Open Street Traffic) system that solves TPEG's one-way communication problem, UTIS's limited usage and DSRC's small traffic bandwidth. In current commercial TPEG service, only some service providers collect traffic information. Thus, it can't cover traffic status in local lanes And UTIS, which local governments and police supports, requires additional equipments. Currently, only taxi and official vehicles use this system. Therefore, new traffic service by mobile device and user's participation can provide very detail traffic information coupling with previous traffic systems. But in this new system, real-time high volume data can be a problem. So, in this paper, new data storage manager design(TDSM :Traffic Data Storage Manager) is suggested and its performance is measured against commercial DBMS.

• Journal of the Korean Society for Railway
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• v.12 no.4
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• pp.526-534
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• 2009

PRT(Personal Rapid Transit) can be described as a system of driverless taxicabs, that. automatically take passengers to their destinations along dedicated guideways, without intermediate stops.It is ideally suited as a short feeder transportation for on-demand circulation operations at train stations, airports, office complex, amusement park and shopping center. This PRT study do suggest that a PRT system could provide a high level of mobility to the commuters making work trips, workers making work, shopping and other non-work trips, residents making shopping and other non-work trips and recreational riders.This study presents the possibilities of PRT applications in national level. As the technology continues to advance, there may be opportunities to improve the reliability, and efficiency of our future public transportation systems.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2008.04a
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• pp.381-384
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• 2008

요즈음 교통사고를 줄이기 위하여 IT 기술을 이용한 교통사고 연구가 많이 진행되고 있다. 그러나, 뺑소니 교통사고 발생하면 가해차량을 현장에서 찾기가 매우 어렵다. 본 논문에서는 이러한 문제점을 해결하기위해서 RFID TAG를 이용해서 뺑소니 교통사고가 발생할 경우에 차량에 내장된 RFID 리더기가 상대방 차량의 차량번호를 인식할 수 있는 모의실험을 하였다. 뿐만 아니라, PDA를 이용한 인터넷 기반에서 교통사고가 발생한 경우에 현장에서 운전자가 교통사고현장 자료 및 운전자 인적사항을 경찰서나 보험회사에 전송할 수 있는 SW를 모의실험 하였다. 모의실험결과 통과차량속도가 저속인 경우에는 70%이상 차량번호를 익식할 수 있음을 확인하였다.

• Proceedings of the Safety Management and Science Conference
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• 2005.05a
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• pp.65-80
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• 2005

대부분의 국가들이 노선버스의 운영을 공공부문에서 담당하고 있으나 우리나라를 비롯한 일부에서만 민간이 운영하고 있어 시민들을 위한 공익성만을 추구 할 수는 없는 입장이며 노선의 선정 또한 사업자와 공공이 협의하여 시행할 수밖에 없다. 이를 개선하기 위하여 버스노선 개편, 공동배차제 등 개선방안을 많은 지자체에서 시행하였지만 시민${\cdot}$업체${\cdot}$공공부문에서의 합의 도출은 지난한 상황이며 실행력이 없는 계획이 되고 있음을 여러 사례에서 볼 수 있다. Internet등 통신기술의 급속한 발달에 따라 통신을 통한 의사표출이 자유롭고 용이해지면서 일반지자체의 경우에 전체 민원 중 교통부문이 차지하는 민원이 $50\%$를 상회하고 있으며, 교통민원 중 $45.3\%$가 노선버스의 정시성 확보 및 운전기사의 불친절, 무정차 통과 등에 관한 것으로써 시민들이 가장 알고싶어 하는 사항이 버스의 실시간 운행상황임을 알 수 있었다. 따라서 본 연구에서는 실시간 버스정보제공을 통해 노선버스 이용자들의 대기시간 감소 및 이용편의를 증진시키고, 이를 통해 승용차 이용자를 대중교통수단으로 유도하여 대중교통을 활성화시키는 버스정보시스템(BIS ; Bus Information System)을 정립하며, 충주시 교통여건을 감안한 버스정보시스템 도입전략을 수립하고, 도입에 따른 기대효과를 분석하여 합리적이고 효과적으로 적용할 수 있는 지방자치단체 특히 충주시의 지능형 교통정보 시스템을 마련하는데 그 목적이 있다.