• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.19 no.2
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• pp.1-17
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• 2020

This Study aims to change and expand present traffic regulation from the human driver to Automated Vehicle(AV), we conducted an in-depth interview(IDI) into the traffic regulation service's strategy for an AV-related information consumer group(AVs and service developers) and a manager group (an information service management agency). The IDI results confirmed several important opinions and requirements for an information service by regulatory information manager groups (enough for AV development), such as a systematic need for dynamic regulatory information and a unified information management system. Also, we find out implications about adopting the Internet of Things (IoT) technology in traffic safety facilities to provide dynamic regulation information on the roads.

• Proceedings of the Korea Information Processing Society Conference
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• 2008.05a
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• pp.103-106
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• 2008

본 논문에서는 지능형 자동차의 주행보조 시스템 중의 하나인 교통 표지판 인식을 위한 새로운 방법을 제안한다. 제안한 방법은 잡음, 회전, 크기 등의 변형된 교통 표지판으로부터 기하학적 방법을 이용하여 변형된 정도를 추정하여 교통 표지판 원형으로 보정한다. 그리고 교통 표지판 인식을 위해서 보정된 표지판 영상으로부터 순차적 색기반 군집화(Sequential color-based clustering)에 의한 주의, 규제, 지시, 보조 등의 1차적 분류에 따라서 해당 교통 표지판의 형태 특징인 인식 심벌을 추출한다. 그리고 추출된 인식 심벌에 원형 추척법을 적용하여 교통 표지판 최종 인식 작업을 수행한다. 제안하는 방법의 성능 평가를 위해서 교통 표지판 영상에 잡음, 회전, 크기 등의 임의 변형을 적용하여 다양한 실험 영상을 만들고, 적용한 결과 단일 변형에서는 95%, 혼합 변형에서는 93% 이상의 인식률을 보인다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2021.05a
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• pp.389-391
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• 2021

Traffic regulations are expanding to prevent traffic accidents for people's safety, but traffic accidents are not decreasing. In this study, the probability of traffic accidents occurring at a specific time and place is estimated by analyzing various factors such as weather forecast data from the Meteorological Agency, day of the week, time of day, location data, and location information. This study combines objective data on the occurrence of numerous previous traffic accidents with various additional elements not considered in previous studies to derive a more improved traffic accident probability prediction model. The results of this study can be effectively used for various transportation-related services for the safety of people.

• KDI Journal of Economic Policy
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• v.10 no.4
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• pp.61-81
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• 1988

우리나라 택시산업(産業)에 대한 정부규제(政府規制)는 크게 보아 요금규제(料金規制), 면허규제(免許規制) 그리고 서비스관련규제(關聯規制)로 나눌 수 있다. 정부규제에 의한 문제점으로서는 요금규제(料金規制)에 의한 초과수요(超過需要)의 존재와 제한적인 면허발급제도(免許發給制度)에 의해 발생한 면허에 대한 프리미엄과 이의 배분을 둘러싼 여러가지 비효율(非效率)과 형평(衡平)의 문제(問題)라고 할 수 있다. 우리나라 택시산업(産業)은 비호출방식(非呼出方式)의 노상유객(路上誘客)을 주로 하는 소위 순항식(巡航式)(cruising)시장(市場)이기 때문에 자유경쟁(自由競爭)의 상태에서는 시장정보전달(市場情報傳達)의 불완전성(不完全性)으로 인한 시장실패(市場失敗)의 가능성(可能性)이 존재한다고 할 수 있다. 따라서 이것을 보정(補正)하기 위한 가격규제(價格規制)의 필요성(必要性)은 인정할 수 있으나, 정부에 의한 제한적인 사업면허(事業免許)의 발급(發給)과, 임의적인 증차결정(增車決定) 및 배분방식(配分方式)은 그 정당성(正當性)이 의문시된다고 할 수 있다. 따라서 장기적(長期的)으로 택시에 대한 면허제(免許制)는 폐지되어야 할 것이다. 그러나 택시증차(增車)의 문제는 도시교통혼잡의 문제와 관련이 있으므로, 중(中) 단기적(短期的)으로는 현행의 직접규제방식(直接規制方式)을 개선하여 일정한 자격을 갖춘 출원자(出願者)에게는 일정금액의 공탁금(供託金)만 납부하면 의무적으로 면허를 내어주는 간접규제방식(間接規制方式)으로의 전환을 고려해야 할 것이다. 또한, 태당(台當) 1일(日) 승객회전률(乘客回轉率)의 증가를 통한 승차난완화(乘車難緩和)를 위해 현행(現行) 요금체계(料金體系)를 개선해야 할 것이다.

• Journal of Korean Society of Transportation
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• v.25 no.6
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• pp.33-42
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• 2007

This research proposes strategies about providing detour route information and traffic management for flood disasters. Suggested strategies are based on prevention and preparation concepts including prediction, optimization, and simulation in order to minimize damage. Specifically, this study shows the possibility that average travel speed is increased by proper signal progression during downpours or heavy snowfalls. In addition, in order to protect the drivers and vehicles from dangerous situations, this study proposes a route guidance strategy based on variational inequalities such as flooding. However, other roads can have traffic congestion by the suggested strategies. Thus, this study also shows the possibility to solve traffic congestion of other roads in networks with emergency signal modes.

• Journal of Korean Society of Transportation
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• v.21 no.1
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• pp.41-49
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• 2003

Marine traffic management could be defined as the implementation of managerial technical measures to improve vessel traffic safety. The managerial elements of vessel traffic management for ports and harbours or narrow channels include the total amount of traffic control, the vessel traffic separation scheme, speed restriction, traffic control by signals, the navigation information service and so forth. This research aims to quantify how much the traffic separation schemes(TSS) contribute to the alleviation effect of ship handling difficulty and to propose a design standard when the individual management measure is applied in an actual waterway. Traffic separation schemes have now been established in most of the major routes and congested waters of the world, and the number of collisions and groundings have often been dramatically reduced. In this part, the relationship between the alleviation of ship handling difficulty and the reduction of encounter figures among ships is quantitatively clarified by applying the ES model. As results of simulation analysis, it is recognized that a traffic separation system is most effective in the case of narrow width and heavy traffic volume. The centre buoy installation reduces about 1/4 of the alleviation of ship handling difficulty, TSS establishment 1/3, and design change to one-way traffic from two-way traffic reduces 1/2.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.9 no.2
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• pp.12-22
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• 2010

The variable message sign(VMS) is a facility to smoothen traffic flows and enable safe passing by providing real-time necessary information on roads, weather, transportation, and traffic regulations. The VMS also solves a feeling of uneasiness and gives a sense of psychological security by providing information to drivers. However, the VMS has a strong character of being a non-market product but a public product, so it has not normally been evaluated for its value. This research has evaluated a value of satisfaction level for traffic information users, using a contingent valuation method(CVM). As a result of evaluating the value of satisfaction level for users through division into an urban roadway and an urban highway for the cities where an intelligent transportation system(ITS) has been established, the urban highway had a value of 96.7 won/system and the urban roadway had a value of 76.3 won/system.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.7 no.4
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• pp.25-35
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• 2008

Variable Message Sign(VMS) is one of the subsystem of Intelligent Transportation Systems (ITS), which is useful for providing real-time information on weather, traffic and highway conditions. However, there are various situations such as incidents/accidents, constructions, special events, etc., which would be occurred on segments, it is unable to control traffic with only the VMS. Thus, it is essential to use of PVMS(Portable Variable Message Signs), which can move to the location needed traffic control and provide more active traffic information than VMS. This study developed a legibility distance model for PVMS messages using in-vehicle Differential Global Positioning Data(DGPS). Traffic conditions, drivers' characteristics, weather conditions and characteristics of PVMS message were investigated for establishing the legibility model based on multiple linear regression analysis. The factors such as height of PVMS characters, spot speed, age, gender and day and night were identified as dominants affecting the variation of legibility distances. It is expected that the proposed model would play a significant role in designing PVMS messages for providing more effective real-time traffic information.

• Proceedings of the KOR-KST Conference
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• 1998.10a
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• pp.342-351
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• 1998

노면표시는 운전자에게 시선유도와 각종 규제 및 지시에 대한 정보를 제공함으로써 교통안전 및 소통에 도움을 주는 시설로써 주야간의 시인성 확보가 중요하며 이를 위해서는 반사화가 필요하다. 노면표시의 반사성능은 유리알 (Glass Bead)의 함량 및 종류, 용융온도, 도료의 색도등 각 영향인자에 의해 결정되지만 현재는 시공법 및 관련 연구의 미흡으로 현행기준의 최하수준을 상회하는 정도로 제공되고 있다. 따라서 본 연구에서는 노면표시의 시공에 관계되는 각 요인중 반사성능가 내구성에 영향을 미치는 주요인자 및 반사성능을 최적화하기 위한 인자별 최적조합을 도출하였다. 연구결과 유리알 살포량이 중량비로 25%-30%, 용융시 온도가 $188^{\circ}C$$\pm$$10^{\circ}C$일 때 노면표면시의 반사성능이 최적화됨을 밝혀내었다. 또한 유리알의 품질개선과 함께 황색 노면표시의 재귀반사 휘도계수 기준을 현재 기준보다 상향조정할 필요성이 있음을 제안하였다.

• Journal of the Korean Association of Geographic Information Studies
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• v.9 no.1
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• pp.20-33
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• 2006

Changing of industry structure and development of traffic and telecommunications requires a change of the knowledge about the space where the human beings reside. Step by step the world is being divided into specified utility blocks. Today there is a limit that only one local government can compete with another region in the world. This study provides decision support tools with the use of GIS on the regional level for regions competition. GIS establishes regions and analyzes their geographic environment data, which will help in local-government problem solving and provide framework data for similar regions to become the community. The wide-area GIS application can present an objective and rational basis for regulation of inefficient investments and excessive competition between adjacent regions. The study area is Gangwon-do. Considering specific features of Gangwon-do which preserved high-quality environment resources, river basins were taken as a basis among natural regional elements. The main object of analysis conducted were the facts relevant to environmental regulation. The Gangwon-do consists of three regions in this study: Yongdong region, North-Hangang region and South-Hangang region. The analysis of each region regulation cases showed the following: in Youngdong region the forests regulation rate is high, in North-Hangang region the military installations protection sector's rate as well as regulation rate for water resources protection is relatively high, in South-Hangang region the forest and water resources regulation rate is high. The percentage of forests and water regulation rate appeared to be rather high in Gangwon-do, which means that the value of forest and water resources there is very high.