• Journal of Digital Convergence
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• v.12 no.6
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• pp.231-236
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• 2014

In this paper, we propose a processing speed improvement by adding a parallel processing based on device(graphic card) into a road region extraction by host(PC) based serial processing. The OpenCV CUDA supports the many functions of parallel processing method by interworking a conventional OpenCV with CUDA. Also, when interworking the OpenCV and CUDA, OpenCV functions completed a configuration are optimized the User's device(Graphic Card) specifications. Thus, OpenCV CUDA usage provides an algorithm verification and easiness of simulation result deduction. The proposed method is verified that the proposed method has a about 3.09 times faster processing speed than a conventional method by using OpenCV CUDA and graphic card of NVIDIA GeForce GTX 560 Ti model through experimentation.

• Journal of Digital Convergence
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• v.16 no.4
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• pp.87-94
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• 2018

Intelligent transportation systems are one of the most important new forms of infrastructure on domestic roads, and is a system that makes possible the most efficient movement of vehicles on a road. The High Pass system, which is a domestic intelligent transportation system, started a little later than in other countries but developed at a rapid pace. With the recent introduction of smart tolling technology, it provided an opportunity to stop and review the tolling system. This study aims to investigate the driving method and results of LDCC for domestic smart towing through case study. Unlike other companies, Lotte Data Communication Company has long invested in payment systems. It has little experience investing in infrastructure, but participated in the Smart Toll System at the Gwangan Bridge in cooperation with the Busan City government, to lead the development of intelligent transportation systems. LDCC, which has made new investments, not only exceeded its existing core competencies, but also upgraded Korea's tolling system's ability to reduce greenhouse gas emissions and improved its financial performance.

• Proceedings of the Korean Society for Rock Mechanics Conference
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• 2004.04a
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• pp.199-217
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• 2004

터널 설계에 있어 갱구부의 위치 및 갱문형식의 선정은 터널 및 갱구사면의 안정성뿐만 아니라, 주위환경과의 조화 및 자연환경 훼손 최소화 등과 같은 환경적인 측면에서도 매우 중요한 부분이다. 현행 국내의 경우 경제성과 시공성 위주의 갱구부 위치 선정으로 과다 절취구간이 발생되어 환경훼손, 민원문제 발생, 과다한 용지 매입비용 등의 여러 가지 부작용이 발생되고 있다. 또한, 갱문 형식의 선정에 있어서 갱구부의 지형여건 및 제반 환경적 영향을 고려하지 않고 원통절개형과 면벽식 갱문의 획일적인 적용으로 주변지형과의 부조화를 이루는 사례가 다수 발생하고 있으며, 갱구부 상단의 유실된 토석이 완충공간의 부족으로 도로 노면상에 낙하되는 사고가 발생하고 있어 그에 대한 대책이 필요한 실정이다. 이와 같은 문제점을 보완하기 위해 갱구부 절취구간 최소화를 위한 구체적인 최소토피고 기준을 마련하였으며, 갱구상단 지형경사의 완급, 갱문주위의 배수기능, 낙석${\cdot}$산사태 등의 발생가능성 등을 고려한 새로운 갱문형식을 제안하고 체계적인 검토를 수행하였다. 이를 통해 점차 강화되는 환경보호정책 방향에 부응하고 자연환경 훼손을 최소화하며, 특히 해빙기와 집중호우시 낙석${\cdot}$눈사태로부터 도로의 안전을 확보할 수 있는 터널 갱문부 설계기준을 제시하였다. 또한, 실제 고속도로 터널의 설계 적용사례를 통하여 본 설계기준의 적용성을 분석하였으며, 실제 갱문 시공사례를 소개하여 향후 설계 및 시공에 도움이 되고자 하였다.

• International Journal of Highway Engineering
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• v.14 no.2
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• pp.37-44
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• 2012

Natural disasters such as hurricanes, floods frequently occurs in the world. The cause of the natural disasters that occurs due to global warming because of increasing of global greenhouse gas emissions. To prevent the global warming, lots of researchers are studying renewable energy area. In order to protect grobal warming, government is trying to reduce green gas emissions under "Low Carbon Green Growth Policy" and investing climiate-friendly industries such as renewable energy harvesting. Research team is developing a renewable energy system that harvests mechanical energy imparted to road from driving vehicles and generates it into renewable electricity. This paper presents the research results of size effect of the piezoelectric ceramic and connection of piezoelectric ceramics. Power characteristics of piezoelectric ceramic as function of experimental variables were measured and analyzed.

• Journal of Korean Society of Transportation
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• v.29 no.5
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• pp.19-32
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• 2011

There are many investment budget drafts in the filed of a road traffic safety. The traffic safety budget is spitted into following three major areas: 1) traffic safety facility (Engineering), 2) traffic enforcement (Enforcement), and 3) traffic safety education & public relation (Education). The three area are known as so-called 3E policy. This study investigates the effect of the investment in the 3E policy on the reduction of traffic accidents analyzing the data annually collected from the 15 local governments during 1992 to 2007. The analysis employing the traffic accidents as the dependent variable reveals that the effect of the investment is higher if same amount of investment is made on areas of the traffic safety education and public relation than the area of facility improvement. The similar conclusions are resulted from the separate investigation of traffic accidents data by 6 different types. All the results consistently indicate that the current traffic safety investment being primarily made on traffic safety facility needs to shift to the areas of traffic safety education and public relation budget.

• Journal of Korean Society for Geospatial Information Science
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• v.21 no.3
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• pp.47-54
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• 2013

Real estate development promotes the efficient management of the land and has immense impact on national economy. So, it is necessary to establish a comprehensive policy by accumulating related information. Real estate development map must have the information about a parcel and adjacent parcel to make it possible to analysis in spatial domain, because error will be manifested in analysis using only real estate attribute information. This can be allocate the attribute of public management information about real estate on cadastral information and spatial information for social infrastructure and buildings. Especially, it must maintain the latest information of changes in the shape and the attributes of the buildings. This study suggested a method for developing a real estate development map based on road name address map and a method to maintain the latest information through the connection with related systems.

• Journal of the Korea Institute of Building Construction
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• v.20 no.4
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• pp.375-382
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• 2020

Rock drop obstacles on major roads in the border area in South Korea has been installed and operated to prevent and block the movement of enemy units. However, the increase in traffic volume due to the development of the border region causes many problems such as road traffic congestion due to rock drop, traffic safety, and impaired urban aesthetics. Therefore, this study aimed to provide guidelines for demolition and replacement facility installation for rock drop obstacles, which are differently applied to each unit, and to suggest the direction of the Ministry of National Defense's policy regarding maintenance cost for necessary rock drop obstacles required for operation. In this study, as part of a guideline study on the removal of rock drop obstacles and the installation of alternative facilities, a standard unit price was suggested for essential rock drop obstacles, so as to be used as judgment data when deciding whether to remove rock drop obstacles.

• Journal of Digital Convergence
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• v.19 no.12
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• pp.457-462
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• 2021

As South Korea is a mountainous topography, installation of tunnel is essential for construction of expressway in straight lines. According to "2019 Road Bridge and Tunnel Status Report", there are 2,682 tunnels in Korea with total length of 2,077km. Tunnels take up 1.9% of total road length and the number of tunnel increased by 94% with 1,300 newly constructed tunnels over the 10 years. According to domestic and foreign researches, a long tunnel over 1km in expressway has dark lightings and monotonous wall design which decrease driver's concentration and make the driver feel bored. This leads to feeling fatigue and drowsiness more easily. In response, Korea Expressway Corporation installed design lighting that increases attentiveness on 10 tunnels with total length over 3km by 2020. To reduce the risks of accident that may happen inside the tunnel, this study conducted a comparative analysis on characteristics of each type of LED landscape lighting installed inside the expressway tunnel. The study aimed on providing the basic material for effective installation of LED landscape lighting for securing driving stability, reducing fatigue, and lowering the risk of drowsiness.

• Journal of Digital Convergence
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• v.17 no.9
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• pp.429-438
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• 2019

This study was to evaluate the level of traffic safety related to domestic traffic accidents by analyzing the international comparison of road traffic accident indicators and to set goals and directions of traffic accidents in Korea in the future. The research procedure was as follows: First, population, number of registered vehicles, roadway length, vehicle kilometers, injury accidents, fatalities, injuries were collected in 32 OECD countries. Second, we determined Korea's traffic safety rankings through international comparison of traffic accident rate. Finally, we analyzed the level of traffic safety by comparing Korea with the 7 advanced countries with the traffic accident rate per vehicle kilometers. The accident rate in Korea was greater than two times higher than those of the seven major developed countries, which showed that the level of traffic safety in Korea implied very low. Target values for domestic accidents were proposed based on the accident rate.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.20 no.1
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• pp.146-159
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• 2021

vehicle simulator as part of an empirical analysis the driving characteristics of elderly drivers. To this end, the driving characteristics of the elderly driver from previous study review. he driving characteristics of the elderly the driving elderly driver and general driverIn summarizing these experimental results, the -test showed different driving characteristics from general drivers in all items except for one side of the lane, such as driving speed and driving operation (brake, throttle, steering operation) at a significance level of 95%. Second, when changing lanes, it was difficult for elderly driver to maintain speed and secure an appropriate distance between carslderly driver changed lanes even in inappropriate situations (short distances between cars). Third, in unexpected situation, elderly drivers needed more distance and time.