• The Safety technology
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• no.200
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• pp.21-23
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• 2014

충북 단양은 우리나라에서 대표적인 산수(山水)의 고장으로 꼽힌다. 남한강과 소백산이 만들어낸 단양팔경은 국내에서도 내로라하는 관광명소다. 그야말로 도시생활에서 지친 몸과 미음을 치유할 수 있는 최적의 장소인 것이다. 하지만 그동안 단양을 찾는 이들에게는 조금의 불편함이 있었던 것도 사실이다. 단양IC에서 단양역까지 이르는 도로는 남한강(충주호)을 끼고 있어 최고의 절경을 볼 수 있는 드라이브 코스로 유명하지만 왕복 2차선에 불과해 주말, 휴가철에는 병목현상이 빈번했기 때문이다. 또 그만큼 교통안전 여건도 좋지 않았다. 이런 문제점들은 2016년 4월이면 완벽히 해소될 전망이다. 쌍용건설이 이 구간을 4차선으로 확장하는 건설공사를 한창 진행하고 있기 때문이다. 쌍용건설은 이룰 통해 도로이용자들의 교통안전을 확보하고, 지역 균형발전에 이바지한다는 계획이다. 때문에 이곳 현장에서는 무엇보다 안전을 최우선 가치에 두고 있다. 이곳의 안전관리가 어떻게 전개되고 있는지 찾아가 봤다.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.20 no.6
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• pp.203-213
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• 2021

A vehicle crash occurs due to various factors such as the geometry of the road section, traffic, and driver characteristics. A safety performance function has been used in many studies to estimate the relationship between vehicle crash and road factors statistically. And depends on the purpose of the analysis, various characteristic variables have been used. And various characteristic variables have been used in the studies depending on the purpose of analysis. The existing domestic studies generally reflect the average characteristics of the sections by quantifying the traffic volume in macro aggregate units such as the ADT, but this has a limitation that it cannot reflect the real-time changing traffic characteristics. Therefore, the need for research on effective aggregation units that can flexibly reflect the characteristics of the traffic environment arises. In this paper, we develop a safety performance function that can reflect the traffic characteristics in detail with an aggregate unit for one hour in addition to the daily model used in the previous studies. As part of the present study, we also perform a comparison and evaluation between models. The safety performance function for daily and hourly units is developed using a negative binomial regression model with the number of accidents as a dependent variable. In addition, the optimal negative binomial regression model for each of the hourly and daily models was selected, and their prediction performances were compared. The model and evaluation results presented in this paper can be used to determine the risk factors for accidents in the highway section considering the dynamic characteristics. In addition, the model and evaluation results can also be used as the basis for evaluating the availability and transferability of the hourly model.

• Korean Security Journal
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• no.25
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• pp.147-164
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• 2010

A variety of work zone including road single-sharing construction add surrounding disorder and increase inconvenience of vehicles and pedestrians and furthermore danger of traffic accidents, which sometimes result in human life damages. Traffic delay due to vehicles and users generating in the course of using large-scale multiplex facilities bring about a great economic loss. Now, a lot of regulations and laws related to traffic safety system on construction sites etc. are established, but can not display efficacy desirably. It brings about continuous economic loss due to human life accidents and delay. For the purpose of solving the problems, it is necessary to import systems such as traffic inducement Security (Japan) and traffic controller (CANADA, USA) This article suggest how improve civil safety and reduce Social cost. therefore This thesis aims at analyzing advanced cases of foreign countries, looking into Korean status, and presenting importing ways of traffic inducement Security appropriate to Korea. It is reasonable to grant grade1, grade2, and technical experts to traffic inducement Security who pass regulated educations and examinations. In addition, by reversing regulations and laws, it is necessary only those who have the licenses of traffic induction guarder etc. can establish construction sites and disordered places on roads. Theory educations for education time must include basic educations and expert educations. Basic educations must include understanding regulations and laws and understanding affairs. Expert educations must include traffic control, safety educations, understanding of traffic accidents, operation of traffic control facilities, and traffic accident settlements. Traffic affairs educations must include traffic induction affairs in sites (hand signals, safety material establishment, traffic accident settlements, and urgent treatments).

• Conservation Science in Museum
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• v.10
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• pp.29-42
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• 2009

This paper explores the types (species of trees) of 25 pieces of waterlogged wood excavated from the area between Gwangju and Jangseong during road expansion by the Gwangju National Museum. These 25 pieces of wood include nine pieces of Quercus (Lepidobalanus Cerris)sp., six pieces of Quercus (Lepidobalanus Prinus)sp., three pieces of Castanea sp., two pieces of Salix sp., one piece of Alnus sp., one piece of Prunus sp., one piece of Morus sp., one piece of Chionanthus sp., and one piece of Acanthopanax sp.

• Proceedings of the KSEEG Conference
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• 2007.04a
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• pp.277-279
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• 2007

• KSCE Journal of Civil and Environmental Engineering Research
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• v.31 no.2D
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• pp.203-208
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• 2011

Traffic demand is continuously increasing due to the development of urban areas in Korea. To cope with this, many efforts have been done including constructions of new roadways and increasing the number of lanes of the existing roadways. Those efforts, however, have been performed for only a short segment of target links having similar traffic characteristics. As a result, most urban cities experience bottle-neck phenomena which lead decreasing flow speed and increasing possibilities of accidents. Thus, this study aims to analyze problems of bottle-neck phenomena and effects of balancing number of lanes along the same corridor having similar traffic characteristics. For this, Route 32 passing the city of Daejeon in Korea has been selected as a case study, and a micro-simulation tool, VISSIM, has been adopted for the analysis. The results show that balanced number of lanes along the same corridor with similar traffic characteristics can increase flow speeds and enhance safety.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.28 no.3D
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• pp.339-346
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• 2008

The research was conducted to investigate the characteristics of lateral wheel path distributions (wandering) in different traffic lanes. The lateral wheel path distributions may affect pavement life and various distress types. The results presented that the normal distribution curve with symmetry was observed in the 2-lane and 3-lane roads. In the case of the 2-lane road (on one direction), the wanderings were 70-95cm, and 70-85cm for the 1st and 2nd lanes, respectively, while in the case of the 3-lane road (on one direction), 50-60cm, 65-85cm, and 80-95cm for the 1st, 2nd, and 3rd lanes, respectively. In addition, the 1st lane vehicles tended to pass on the right side to avoid the opposite side vehicles, while the outside lane vehicles tended to pass on the left side to avoid the walkway.

• Journal of Korean Society of societal Security
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• v.1 no.4
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• pp.51-56
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• 2008

Because of our country's climate that has the 50% of the annual precipitation in summer, annually a lot of bridges on the roads are broken in this season. So, we need an accelerated bridge construction method that complete to repair the roads. This paper introduces the Hangae 2 bridge, prefabricated bridge using full depth precast deck panels and new types of PSC girders. The Hangae 2 bridge located in lnje-gun, kangwon-do. This is a good example of the accelerated bridge construction method for recovery of flood damaged road. The PSC girder bridge system introduced in this paper is a rapid construction method for bridge that can reduce the term of works over 50%.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2004.05a
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• pp.687-687
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• 2004

예술의 전당 하부를 통과하는 우면산터널은 예술의 전당 자료관, 오페라하우스, 음악당, 서예관, 미술관 등의 건물과 인접하여 설계되었다. 이들 건물은 진동의 전달경로에 따라 구조-구조의 전달경로인 자료관과 구조-지반-구조의 전달경로인 오페라하우스, 음악당, 서예관으로 분류할 수 있다. 자료관은 하부의 기조 중 일부가 우면산 터널의 통과를 위해 설치한 박스(box) 터널 상부와 구조계를 형성하고 있고, 오페라하우스와 음악당 및 서예관 주변으로는 우면산 터널의 상행선과 하행선이 각각 인접하여 통과하는 구조계를 형성하고 있다. 본 연구는 서울시 서초구 서초동～우면동에 이르는 우면산 터널에 실험 차량이 통과할 때 차량 통행으로 인해 발생하는 진동이 예술의전당 자료관, 오페라하우스, 음악당, 서예관 등의 건축구조물에 전달되는 고체전파음의 발생특성 파악하고, 예술의전당 통과구간에 방진패드에 의한 도로포장 공사 후 그에 대한 효과를 비교하였다. 또한, 우면산 터널 예술의 전당 통과구간에 대하여 다공성 아스팔트로 도로포장한 후 그에 대한 효과도 파악하였다.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.22 no.5
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• pp.163-181
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• 2023

Improving the detection performance of facilities corresponding to the sensors of autonomous vehicles helps driving safety. In the road and transportation field, research is being conducted to improve the detection performance of sensors by road infrastructure or facilities. As part of this on the development of autonomous driving support infrastructure, the shape of traffic cones and drums to ensure sufficient LiDAR detection performance even rainy conditions and maintain the line-of-sight guidance function in construction zones improvement effect. The principle was to increase reflection performance and ensure no significant difference in shape from existing facilities. Traffic cones were manufactured in square pyramid shapes instead of cones, and drums were manufactured in hexagonal and octagonal pillar shapes instead of cylinders. LiDAR detection data for the facility was confirmed on a clear day and with 20 mm/h and 40 mm/h rainfall. The detection performance of the square pyramid-shaped traffic cone and octagonal column-shaped drum was to the existing facility. On the other hand, deviations occurred due to repeated measurements, and significance could not be confirmed through statistical analysis. By reflecting these results, future studies will seek a form in which data can be obtained uniformly despite the diversity of measurement environments.