• 디지털융복합연구
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• 제16권7호
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• pp.249-257
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• 2018

본 논문은 신기술이 융합된 도로안전시설물에 대한 평가기준 탐색 및 평가를 위한 가상현실 시뮬레이션 환경 구축을 목적으로 하였다. 가상현실 시뮬레이션을 위해서는 높은 현실감과 정확한 행동 데이터 추출이 필요하다. 이를 위해 Unreal Engine을 활용하여 주변 환경을 외부환경과 차량환경으로 나눠 제작하였다. 외부환경은 주변 환경, 날씨, 시간대, 타 차량으로 나눠 제작하였으며 차량환경은 승용차와 화물차를 요인으로 제작하였다. 이후, 발광 도로표지병에 대한 샘플 시뮬레이션 제작 및 사전실험을 진행하여, 도로표지병이 5m 간격이 10m 간격보다 더 차선유도를 잘한다는 결과를 나타냈다. 이는 차후 새로운 기술이 접목된 새로운 도로안전시설물에 대한 평가기준에 대한 탐색을 위한 시뮬레이션 작성에서도 활용 가능하다는 것을 확인할 수 있었다. 향후, 다른 도로시설물에 대한 모델링 및 샘플 컴포넌트를 추가하여 다양한 환경에 대한 시뮬레이션이 가능하도록 할 수 있을 것이다.

• 환경영향평가
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• 제13권6호
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• pp.295-305
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• 2004

After the Rio declaration on environment and development in 1992, developed countries are undertaking "environmentally sustainable transportation (EST)" projects. To meet the needs for EST, current transportation policies in Korea are rapidly reforming and one of its concerns is modernizing and upgrading railway freight system. Planning new railroad construction projects is increasing and subsequent environmental impact assessment (EIA) demands improvements, especially in both the EIA and decision making systems. In this paper, we discuss the present status of EIA for railroad construction projects, especially, by analyzing the EIA documents for the last six years. The EIA for railroad construction projects accounts for only 4.9% of total 918 project EIAs during 1998-2003, and the portion is gradually increasing. Major environmental concerns for EIA in railroad construction projects were geomorphological and ecological changes, protection of rare organisms, air pollution, water pollution, waste management, and noise, etc. We compared characteristics of environmental impacts of railroad construction with those of vehicle road construction, based on environmental and construction-planning indicators appeared in Environmental Impact Statements. Railroad construction usually requires longer tunnels and bridges for a given length than those for vehicle road construction. In addition, the amounts of geomorphological and ecological changes (road-cutting, embankment, devegetation, etc.) in railroad construction were generally less than 50% of those in vehicle road construction. To develop environmentally friendly railway systems, monitoring studies for environmental impacts of railroads such as habitat fragmentation and road kills, dispersal of alien plants, tunnelling effects on groundwater and vegetation, and noise impacts are highly recommended.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2004년도 춘계학술대회논문집
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• pp.535-541
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• 2004

For housing estate of a new administrative capital city, Noise reduction method is a important design factor. As measuring a noise level of traffic noise according to separation from road, it can be created a quite housing estate. Analyzing of merits and demerits in sound barrier walls and tunnels can be proposed environment friendly soundproofing facilities. Number of measurement was performed to know what kind of layout of housing estate is good for noise reduction. Through this measurement, ㄷ shaped layout or parallel layout has the advantage of sound insulation rather than right angled layout. In this case (ㄷ shaped layout or parallel layout) buildings neighboring to the road should be designed to insulate sound. Evergreen trees should be planted between housing estate and road more than 30m (at least 7～8m) in order to reduce noise and have masking effects. If broad-leaved trees are planted more than 30m, approximately 10dB noise is reduced and 2～4dB if 7～8m. Roads in the estate should be designed considering pedestrians first, and special roads for moving and ambulance should be designed as skew road, if possible. The result shows that 15$^{\circ}$-sloped‘S’road reduces 1～2dB noise and 30$^{\circ}$-sloped road reduces 4～7dB. If noise barrier is inevitably installed, it should be designed to go well wit neighboring environment so as to install Environment Friendly Noise Barrier using materials and trees including wood and soil. Through this study the results are used to guideline for construction of environment friendly housing estate

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 ITC-CSCC -2
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• pp.1324-1326
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• 2002

This paper concerns the development of distributed interactive simulation of a road traffic system. The simulation involved models of multiple and distributed road vehicles running on different locations. The simulation system represented a traffic system as if the distributed simulation models were in the same environment. The development of the distributed road traffic simulation was based on High Level Architecture (HLA), a state-of-the-art IEEE standard for the distributed and real-time simulation. Other work concerned modeling and simulating the road vehicles and building the map database for the virtual distributed shared environment. The information used in the simulation system was only in X-axis and Y-axis as the insignificant data in the Z-axis was omitted to simplify the simulation. However, the traffic system has visualized a 3-D coordinate system. The road vehicle models were able to avoid collision. The next direction of a vehicle can be chosen from the provided choices of further paths.

• 한국환경복원기술학회지
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• 제2권3호
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• pp.83-92
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• 1999

To investigate the influence of forest road characteristics and site conditions on the stability of forest-road in granite area, four forest roads had been selected in Kyongbuk regions. The total of 13 road characteristic variables were evaluated by the discriminant analysis. The factors influencing the stability of forest road were bed rock, slope length, coverage, hardness, side-ditch erosion and road width. But aspect and soil texture were not significant for the stability in this area. In the correlation between forest environment and road structure, hardness and bed rock was highly significant in stability group, and coverage and side-ditch erosion was highly significant in instability group. 75 of 175 segments were instable whereas the others were stable. The centroids value by discriminant function in the stability and instability were estimated to 3.0585 and -1.9116, respectively. The stability criterion of forest road was discriminated from the centroids value of the each group. The main factors contributing the stability of forest road were significant in order of side-ditch erosion, coverage, soil texture, elevation, gradient, slope length and construction year. The prediction rate of discriminant function for stability evaluation of forest road was as high as 97.44%. In conclusion, the forest road structure factors such as length, coverage and slope gradient were controlled by construction techniques. If the factors like those should be considered in design, construction and forest road management, the stability of forest road may increase more. And also, it is necessary to take slope protection measures like small terraces and retaining walls for stability of cut slope.

• 농촌계획
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• 제19권1호
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• pp.189-207
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• 2013

This study aimed to draw the plan elements and characteristics that should be considered in case when developing guidelines to build up roads in rural villages. Drawing the construction elements necessary for building up roads through the advanced researches, the survey was conducted for relevant experts in order to evaluate the importance of each plan element of route plan, design & construction and operation & management. The result determined total 105 contents that should be considered in case when building up roads in rural villages. The study on building up roads in rural villages as a strategy to vitalize rural areas means universal roads that connect each village with rural amenities in various values like walking tour road, visit roads and observation roads. It is considered that the development of guidelines for building up roads in rural villages could be used as a basic data to build up roads where nature, culture and history of rural areas can be effectively experienced and enjoyed.

• 대한인간공학회지
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• 제21권3호
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• pp.25-34
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• 2002

The road sign in dynamic traffic system is an important element which affects on human cognitive performance on driving. Web-based vision system simulator was developed to examine the cognition time of the road sign in dynamic environment. This experiment the cognition time of the road sign in dynamic environment. This experiment was designed in with-subject design with two factors: vehicle speed and the amount of information of the traffic sign. It measured the cognition time of the road sign through two evaluation methods: the subjective test with vision system simulator and computational cognitive model. In these two evaluations of human cognitive performance under the dynamic traffic environment, it demonstrated that subject's cognition time was affected by both the amount of information of traffic sign and driving speed.

• 한국환경과학회지
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• 제23권12호
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• pp.2029-2034
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• 2014

To improve air quality around a broad way, Daegu Metropolitan city employed the clean-road system at a part of the broad way of Dalgubul (Daigubul-daero) in 2011. The clean-road system in general is operated two times (4 am, 2 pm) during summertime. In case of scorching alert, the system is operated 3 times a day (4 am, 2 pm and 4 pm). To evaluate the effect of air quality improvement due to the system, we analyzed the time variation of monthly mean particulate matter (PM10) concentration in recent 3 years (2011-2013). The improvement of air quality was estimated at about 5~15 % under the system.

• 환경영향평가
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• 제26권5호
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• pp.354-364
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• 2017

우리나라는 경제개발과 물류 유통의 증대를 위해 사회기반시설인 도로에 막대한 투자를 하고 있다. 이로 인해 생태적 보전가치가 있는 지역의 훼손과 생태계의 파편화, 생활환경의 악화 등의 환경적 문제가 야기되고 있다. 본 연구는 도로 건설로 인한 환경훼손을 사전에 방지하거나 최소화할 수 있도록 도로건설계획의 기본구상과 노선선정 단계에서 적용 가능한 계획지표를 도출하였다. 이를 위해 도로와 관련된 행정규칙과 전략환경영향평가서 검토의견, 기존 연구보고서 등을 분석하였으며, 선정된 계획지표에 대한 적용사례를 조사하였다. 또한 도출된 지표를 도로건설계획에 효율적 합리적으로 적용 평가하기 위한 방법으로 대안 평가를 제안하였으며, 대안 평가 시 계획지표에 대한 환경영향을 판단할 수 있는 기준을 마련하고 사례에 적용하였다. 이번 연구결과는 과거의 도로건설계획에 대한 친환경성 지표를 보완하고 계획지표의 합리적 적용을 위한 방안과 계획지표의 영향 여부 판단기준을 마련했다는 측면에서 의의가 있다.

• 한국도로학회논문집
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• 제13권1호
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• pp.129-138
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• 2011

본 연구에서는 노선선정과정에서 정량적으로 환경성을 평가할 수 있는 방법에 대한 각종 제도 및 문헌을 고찰해 보고, 이를 바탕으로 도로노선의 정량적 환경성 평가 방법을 제안하였으며 이를 국내에 계획된 도로노선에 적용하여, 국내도로에 대한 친환경성을 평가하였다. 이에 따라 중부권, 강원권, 남부권의 지역별 사례구간을 선정하고 제안된 환경성 평가방법을 수행하였다. 그 결과 각 지역별 사례구간의 해당 지역에 대한 환경점수대의 분포가 다양하게 나타남을 확인하였다. 또한 각 노선의 환경적인 정도를 나타낼 수 있도록 해당지역의 환경영향 최소화 경로를 생성한 후 이를 기준으로 각 노선의 친환경도를 분석하였다. 그 결과 지역의 환경적 민감도가 큰 지역 즉, 높은 점수대가 많은 지역인 강원권에 설계된 노선의 친환경도가 가장 낮게 분석된 결과를 볼 수 있었다.