경기도내 일반국도 노선 조정방안 연구

류시균,김채만,유재상 경기연구원 2019 정책연구 Vol.- No.-

The purpose of this study is to select local roads to promote to national highways. Literature review reveals that various standards are used to determine road types, while principles of national highway network design are vague. We clarify the principles to determine characteristics of national highways and diagnose the problems of national highway routes in Gyeonggi-do based on new principles. To solve the revealed problems of national highway routes, we have established “Alternatives of National Highway Routes in Gyeonggi-do”. From this alternatives roads are selected to propose to the central government as national highways. We propose Gyeonggi Provincial Government a list of local roads to promote to highways. We also suggest to central government to carry out the same study at the national level.

지방부 국도에서의 보도설치 우선순위 결정을 위한 방법론 개발 (일반국도 적용사례 중심으로)

전우훈,양충헌,윤정은,양인철,Jeon, Woo Hoon,Yang, Choong Heon,Yoon, Jung Eun,Yang, Inchul 한국도로학회 2015 한국도로학회논문집 Vol.17 No.4

PURPOSES: The purpose of this study is to develop a methodology to prioritize sidewalk construction on rural national highways. METHODS : In order to determine an appropriate prioritization for sidewalk construction, we developed a specific methodology. The proposed methodology includes three main steps: 1) Analytic Hierarchy Process (AHP) methods, 2) Subjective evaluation of relevant road agencies for the candidate sidewalks along rural national highways, and 3) Field study conduction. Each step has four phases. The primary feature of this methodology is the addition of expert consultation and survey data, as well as a field study. In addition, the method could guarantee flexibility in selection for evaluation criteria. As a result, the proposed methodology could be used as a general procedure for application to other roadway classifications when considering sidewalk construction. RESULTS: In order to demonstrate the reasonableness of the proposed methodology, a case study was performed for exactly 100 candidate sites for sidewalk construction on rural national highways. All required evaluation scores were properly produced for each candidate site. By doing so, decision-makers can determine the priority for sidewalk construction at these sites by reviewing quantitatively and qualitatively considered data. CONCLUSIONS: The results of the case study can be applied to a long-term fundamental plan for sidewalk construction on rural national highways. Furthermore, this methodology could be employed to prioritize a small-scale SOC project(e. g. bicycle or pedestrian roads).

일반국도 구간의 속도패턴 모형

한수산 ( Su San Han ),박병호 ( Byung Ho Park ) 충북대학교 건설기술연구소 2012 建設技術論文集 Vol.31 No.2

이 연구는 일반국도구간의 평균속도와 속도분산을 다루고 있다. 이 연구의 목적은 속도패턴의 특성을 분석하고, 모형을 개발하는 것이다. 이를 위해 국도 36호 선의 자료를 이용하여 속도와 분산의 차이를 검증하고, 포아송 및 음이항 회귀 모형을 개발하는데 중점을 두고 있다. 주요 결과는 다음과 같다. 첫째, 구간 3의 속도분산이 가장 높은 것으로 평가되었다. 둘째, 통계적으로 모두 의미 있는 한 개의 포아송 모형과 한 개의 음이항 모형이 개발되었다. 마지막으로 속도모형의 변수로는 신호교차로 수와 종단경사(3% 이상)인 것으로 평가되었고, 속도분산 모형은 K30와 교량의 수로 분석되었다. This study deals with the average speed and speed variance of national highway. The objectives are to comparatively analyze the characteristics of speed patterns, and to develop speed models. In pursuing the above, this paper gives particular attentions to testing the differences between speed and variance, and developing the models (Poisson and negative binomial regression) using the data of National Highway Route 36. The main results arc as follows. First, the average speed was analyzed to be 66.74kph, and speed variance of section 3 was evaluated to be the most. Second, one Poisson model and one negative binomial model which were all statistically significant were developed. Finally, the chosen variables of the speed model was evaluated to be the number of signalized intersection, the longitudinal slope(3% over), and that of the speed variance model was analyzed to be the K30 and the number of bridge.

고속도로와 국도에서 차량 당 탄소가스 배출량 비교 -경부 고속도로와 1번국도의 비교를 중심으로-

이윤석,오흥운 한국도로학회 2011 한국도로학회논문집 Vol.13 No.3

There are several differences between freeways and general national roads in terms of structures, conditions and limited speeds. Likewise,the characteristics of CO_2 emission in these roads differ depending on the road types. For these reasons, it is necessary to compare the two types of roads in terms of CO_2 emissions. The study was performed targeting Gyeongbu Expressway and National Highway 1. Firstly, the amount of CO_2 emission each car was compared in the whole sections of the both. Secondly, top 10 sections were picked out, and then CO_2 emission each section were compared. Lastly, two sections which were with the highest and lowest amount of CO_2 emission per car, were compared. As results, it were found that there were less amount of CO_2 emission on freeways. because cars are running on uniform velocity at relatively high speed, and that there were more amount of CO_2 emission on the national highway. because of frequent intersections and associated congestion. It may be concluded that the amount of CO_2 emission at the national highway could be reduced if signal coordination and intersection intervals are improved there. 고속도로와 일반국도는 도로의 구조, 조건이나 속도 등이 다르게 나타난다. 이러한 특성에 따라서 CO_2 배출량 역시 다르게나타난다. 하지만 고속도로와 일반국도에서 배출되는 CO_2의 비교 연구는 미비한 실정이다. 이러한 이유로 고속도로와 일반국도에서의 CO_2 배출량을 비교하여 분석이 필요하다. 본 연구를 위하여 경부고속도로와 1번국도를 대상으로 분석을 수행하였다. 첫째, 전체 구간의 차량 당 CO_2 배출량을 비교하였다. 둘째, 세부 구간 중 상위 랭크된 10개의 구간을 상세 분석하였다. 셋째,차량 당 CO_2 배출량이 가장 많은 구간과 가장 적은 구간을 선정하여 세부적으로 비교 분석하였다. 분석 결과 고속도로의 경우 교차로나 신호 등의 제약조건이 없어 거의 등속도로 운행을 하기 때문에 CO_2 배출량이 적고, 일반국도의 경우 교차로 및신호로 인하여 가감속 운행을 하기 때문에 CO_2 배출량이 큰 것으로 분석되었다. 국가적으로 교차로 수 조정 및 신호 연동화를개선한다면 일반국도에서 CO_2 배출량을 저감할 수 있다는 추론이 가능하다.

지방부 국도에서의 보도설치 우선순위 결정을 위한 방법론 개발 (일반국도 적용사례 중심으로)

전우훈,양충헌,윤정은,양인철 한국도로학회 2015 한국도로학회논문집 Vol.17 No.4

PURPOSES: The purpose of this study is to develop a methodology to prioritize sidewalk construction on rural national highways. METHODS : In order to determine an appropriate prioritization for sidewalk construction, we developed a specific methodology. The proposed methodology includes three main steps: 1) Analytic Hierarchy Process (AHP) methods, 2) Subjective evaluation of relevant road agencies for the candidate sidewalks along rural national highways, and 3) Field study conduction. Each step has four phases. The primary feature of this methodology is the addition of expert consultation and survey data, as well as a field study. In addition, the method could guarantee flexibility in selection for evaluation criteria. As a result, the proposed methodology could be used as a general procedure for application to other roadway classifications when considering sidewalk construction. RESULTS: In order to demonstrate the reasonableness of the proposed methodology, a case study was performed for exactly 100 candidate sites for sidewalk construction on rural national highways. All required evaluation scores were properly produced for each candidate site. By doing so, decision-makers can determine the priority for sidewalk construction at these sites by reviewing quantitatively and qualitatively considered data. CONCLUSIONS: The results of the case study can be applied to a long-term fundamental plan for sidewalk construction on rural national highways. Furthermore, this methodology could be employed to prioritize a small-scale SOC project(e. g. bicycle or pedestrian roads).

광주시 태전지구 교통대책 방안

조응래,지우석,박지선 경기연구원 2019 정책연구 Vol.- No.-

The planned population of Taejeon region is 19,869 people, and the area is 965,756 ㎡. Large scale housing complexes without transportation measures result to traffic difficulties. The purpose of this study is to solve the traffic inconveniences for Taejeon residents by establishing comprehensive transportation measures considering short-term and long-term alternatives. The transportation measures for Taejeon region are road expansion plan, railway expansion plan, and traffic system improvement plan. The road expansion plan examined nine short-term projects and five mid- and long-term projects. As a way to expand railway facilities, the feasibility study for Wirye-Sinsa Line extension was reviewed. Traffic system improvement plan requires the upgradement of roundabout under Taejon Overbridge, Opo Intersection, and Opo IC on Sejong-Pocheon Highway. In this study, the following five policies are suggested. First, use special accounting for metropolitan transportation facilities by applying metropolitan railway system. Second, pursue the national highway bypass project. Third, suggest to the Ministry of Land, Infrastructure and Transport that the expansion of Gobul road and Route 43 connected to Sejong-Pocheon Expressway should be classified as central government project. Fourth, establish a comprehensive plan so that part of the road project connecting Taejeon Overbridge to Gwangju Station are covered by the responsible development project operators. Last, promote the Gwangju city public transportation improvement of operating a bus route that directly connects from Samdong Station to Gwangju Station in Taejeon region as Gwangju reestablishment project.

통계기법을 활용한 포장파손자료의 잠재오차 보정

한대석(Han, Daeseok),도명식(Do, Myungsik) 대한토목학회 2012 대한토목학회논문집 D Vol.32 No.6D

성공적인 자산관리시스템의 도입은 풍부하고도 신뢰할 수 있는 데이터와 함께 시작된다. 그러나 현실에서는 알려지지 않은 다양한 원인에서 비롯되는 관측 오차들은 항상 존재하기 마련이다. 이는 관리자의 유지보수활동을 방해하며 파손과정이나 생애주기비용 예측결과의 신뢰성에도 악영향을 미친다. 무엇보다도 관리자가 자신의 손으로 직접 조사한 자료를 믿지 못하는 모순된 결과를 낳는다. 이런 현상은 도로포장관리분야에서 특히나 심각하다. 도로관리자들은 이러한 사실에 대해 충분히 인식하고 있으나, 현실적으로 오차 없는 조사를 수행한다는 것은 하나의 큰 도전이라고도 할 수 있다. 이러한 점들을 고려하여 본 연구에서는 포장표면 조사자료에 포함된 오류 및 잠재오차를 보정하기 위한 통계적 방법론을 제시하고자 하였다. 방법론으로는 오차의 구조 및 신뢰도를 고려할 수 있도록 확률분포이론에 근거한 두 가지 기법(샘플기준법과 분포기준법)을 제안하였다. 제안된 방법론은 국도에서 수집된 포장상태자료들을 활용하여 적용 가능성을 살펴보았으며, 그 결과 눈에 보이는 오류들만을 제거하는 일반적인 방법론으로는 포장자료에 포함된 불확실성을 충분히 고려할 수 없음을 확인하였다. 제안된 방법론은 도로자산관리에 필요한 다양한 분석의 신뢰성을 개선하는데 유용하게 활용될 수 있을 것이다. Successful implementation of infrastructure asset management system can be started with rich and reliable data. However, measurement errors in the data have always existed in the real world caused for many unknown reasons. It disturbs maintenance activities of agencies, and makes negative effects to reliability of research results on forecasting deterioration process and life cycle cost. Above all, it makes a contradiction that road agencies cannot believe their inspection data surveyed by their hands. It is particularly serious in the road pavement management field. Although road agencies are well recognized the fact, inspecting without measurement error would be a great challenge. Considering the facts, this paper aimed to suggest statistical error processing methods to correct latent error included in pavement surface inspection data. As alternatives, this paper suggested two methods based on probability distribution to consider structure of error and reliability of the data. The suggested methods were empirically tested by using pavement inspection data from Korean National Highway. As the result, this paper confirmed that conventional error processing that just removes only visible errors is not enough to cover uncertainty in pavement deterioration process. The suggested methods would be useful for improving reliability of analysis results required for road infrastructure asset management.

Life Cycle Cost Analysis on Pavement Inspection Intervals Considering Maintenance Work Delay

한대석,도명식 대한토목학회 2015 KSCE JOURNAL OF CIVIL ENGINEERING Vol.19 No.6

Inspection strategy has a significant effect on the entire working process of pavement management. Most countries or road agencies casually define their inspection intervals without careful consideration. Moreover, most conventional pavement management analysis models do not treat inspection strategy as an important issue. Thus, with an economic analysis of inspection intervals, this paper aims to give a wider publicity to the importance of inspection strategy. An improved LCCA (Life Cycle Cost Analysis) model has been developed as an analytical tool. This model can take delays into consideration, as well as estimate various LCC contents and decision indicators. Both the hypothesis and the developed LCCA model have been empirically tested with pavement data from Korean National Highways. As a result, we can confirm that 1) the inspection interval affects overall management activities and LCCA results, 2) the suggested method shows an improvement in estimation results which consider the effects of delay in maintenance, and 3) either a 2 year or 3 year interval is the most beneficial interval, from both engineering and economical perspectives. In conclusion, the inspection interval needs to be carefully determined by analysis works. It is potentially a critical index that will improve current management strategy by in-house efforts.

Application of Bayesian Estimation Method with Markov Hazard Model to Improve Deterioration Forecasts for Infrastructure Asset Management

Daeseok Han,Kiyoyuki Kaito,Kiyoshi Kobayashi 대한토목학회 2014 KSCE Journal of Civil Engineering Vol.18 No.7

The heart of asset management systems for road infrastructure is the deterioration forecasting model. It provides the most fundamental information for better asset management. So far, there are many practices to build a reliable forecasting model using inspection data in conjunction with statistical theories. In many applications, however, an inadequate stock of inspection data or difficulty in applying sophisticated statistical methods have often been serious obstacles. As a solution, this paper suggests applying the Bayesian estimation method with a multi-state exponential hazard Markov chain model for simple and reliable deterioration forecasting for infrastructure. The main contents of this paper are an introduction of the model’s framework combining Markov chain, hazard theory, and Bayesian estimation method, and a demonstration of its practical application with an empirical study. The empirical study was conducted with time-series inspection data of pavement from the Korean National Highways. The estimation results from the suggested method would be useful for improving the current pavement maintenance strategy for Korean National Highways. However, the most important message of this paper is that the framework of the Bayesian Markov hazard model could be the best model to use for other civil infrastructure that has gradual changes in condition. The great advantages from the Bayesian estimation method may facilitate development of customized asset management systems.

차량의 Spin-out 영향을 고려한 UCC 시스템 성능향상을 위한 제안

정명철(Myungchul Jung),오승규(Seungkyu Oh),이종일(Joingil Lee),노지훈(Jihoon Roh),김영우(Youngwoo Kim),김형수(Hyuoungsoo Kim),김인동(Indong Kim),장진희(Jinhee Jang) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4

In this paper, a proposal for performance improvement of unified chassis control(UCC) system considering the spin-out effect of the vehicle has been presented. In the UCC system, ESC (Electronic Stability Control), AFS (Active Front Steering), and EAS (Electronic Air Suspension) are included. In this paper, main focus on the test is concentrated into spin-out aspect of the vehicle because spin-out of the vehicle is a main reason to occur fatal injuries like a secondary collision in the highway. NHTSA has announced that Sine with Dwell Maneuver is the basis test to pass for the NHTSA FMVSS-126 regulation and this maneuver is severe enough to produce spin-out for most vehicles without ESC. With such reason, the Sine with Dwell maneuver was selected to evaluate spin-out effect of the vehicle. Before the UCC system test, each independent system performance check has been done by benchmarking test. Base on the test results, it is proposed that control strategy of each subsystem and UCC system. The final purpose of this paper is to improve vehicle performance with overcoming each sub-system performance limit and reduce spin-out effect on the UCC vehicle.