양방향 2차로 도로의 운영형태에 따른 총지체율 비교

홍익상,임채문,박용진 대한토목학회 2003 대한토목학회 학술대회 Vol.2003 No.10

信號交叉路의 交通特性과 左回轉 禁止에 따른 運營效果에 관한 硏究

홍익상,공창환,정우영,임채문 대구대학교 산업기술연구소 1993 産業技術硏究 Vol.12 No.-

This study analyzed the characteristics of the operation of left turns at intersections of the streets in Taegu City. The points of the study were as follows: increase of traffic capacity, decrease of delay time, and to do so this study aims at seeking a way for the most appropriate signal cycle and an effective way to operate intersections. The following are the results: 1st The arterials of Taegu City have a high rate of left turns, and yet are not divided into specific functions, which impairs the efficient use of the functions. It is required that a study be made on the way of utilizing the left turn to the maximum of the operational functions of signalized intersections. 2nd As traffic volume and left turn ratio increase, it was revealed that the optimum signal cycle and delay increased, adoption of efficient lanes was analysed to be most effective at the intersection which have a great of traffic volume and a high or rate of left turns. 3rd On the independent intersection in Taegu city, when left turn is prohibited, it may give poor approaches, but according to analyses this will bring a phenomenal decrease in the optimum signal cycle and delay.

대도시 도심지역 일방통행 체계 적용에 관한 연구

김대웅,정웅기,홍익상 嶺南大學校 環境問題硏究所 1999 環境硏究 Vol.18 No.2

요약문본 연구는 대구시 도심지역의 주요 간선도로를 대상으로 일방통행 적용 모의실험을 교통배 분모형을 통하여 행하였다. 일방통행 적용은 도심지역 전체 도로망에 대해 일괄적으로 행하 지 않고, 현실성 있는 일방통행 실현을 위하여 일방통행 대상 도로망을 도로망 형태 및 기 능, 교통량 패턴, 토지이용 특성 등의 기준을 설정하여 선정하였으며, 그 결과 도심지역의 동서간선도로의 경우에는 일방통행 적용 기준에 부적합한 것으로 판단되어 남북간선도로에 대해서만 적용하였다. 일방통행 운영 대안으로는 시내버스 운행과 관련하여 시내버스를 포 함한 일방통행 운영안(대안 1)과 시내버스 제외 일방통행 실시안(대안2) 등 2가지를 설정하 여 분석을 행하였다. 이상의 연구결과를 정리하면 다음과 같다. 첫째, 일방통행 운영 대안별 기대효과 분석 결과, 전차량 일방통행 실시안인 대안(1)이 교통 소통, 신호 및 차로운영, 연도 접근성 등의 여러 측면에서 가장 양호한 대안으로 나타났으 나, 대안(1)의 시행에는 41개 시내버스 노선 변경이라는 현실적인 어려움이 있는 것으로 분 석되었다.둘째, 일방통행 운영 대안별 평균통행속도 분석 결과, 일방통행 실시 대상 8개소 도로구간에 서는 대안별 약 23∼51% 증가, 1차 순환선내 주요 도로망에서는 대안별 약 26∼35% 증가 하는 것으로 분석되어 일방통행 실시에 따른 교통 소통력 개선효과도 매우 좋은 것으로 나 타났다.셋째, 일방통행 운영 대안별 교차로에 있어서 차량의 지체도 및 서비스수준 분석 결과는 2 가지 대안 모두 일방통행 실시전에 비해 교차로에서의 지체도가 대부분 100% 이상 개선되 었으며, 종단부 교통처리도 별 문제가 없는 것으로 분석되었다.Abstractthis study has been conducted a simulation of an oneway operation system using a traffic assignment model at major arterials in the CBD in Taegu city. For adaptiong of oneway operation system, arterials selected according to a criterion of road network types, road network functions, patterns of traffic volume, and land use characteristics, while it does not act of road network in whole CBD.The operating method has been analyzed, one for including city bus of oneway operating method(alternative I), and the other for excluding city bus (alternative Ⅱ). The results are as follow :First, the alternative 1 has been appeared most feasible one concerning for traffic operation, signal and lane operation, accessibility. However, the alternative 1 has been analyzed several problems changing about 41 city bus routes.Second, comparing each operating alternatives with average travel speed, eight places of oneway operations were increased about 23-51% within the first circulation. Therefore, the oneway ooperation is very efficient for traffic flow improvement.Third, the results of car delay and level of service analysis according to intersection analysis of each alternatives of oneway operation have been improved almost 100% efficiently, also there was not a big problem treating traffic operation at the end of oneway operation system.

양방향 2차로 도로의 운영행태별 총지체율 산정 모형구축

홍익상(Hong Ik Sang),이영우(Lee Young Woo),임채문(Lim Chae Moon),박용진(Park Yong Jin) 대한토목학회 2005 대한토목학회논문집 D Vol.25 No.4D

三角測量의 誤差調整方法에 관한 硏究

林采文,洪益相 대구대학교 기초과학연구소 1993 基礎科學硏究 Vol.10 No.-

Triangulation is a mode of survey performed to decide with precision through triangulation the position of triangulation station, a basic point, which constitutes the frame in traugsing, topographic survey, cadastral survey and others. For each triangulation station in triangulation, the survey of all angles should satisfy the three conditions. No matter how prudently observed, there will always be errors and the three conditions are not fulfilled, so all the observed angles should be adjusted to satisfy the above conditions, In this study, adjustment, adjustment value and precision are attemped for review by means of approximate method and angle equation of horizontal in triangulation of central triangular net which will decide one point from already known triangulation station.

평면선형의 편구배에 대한 안전성 검토 : 고속의 도시부 가로를 중심으로

임채문,박준,홍익상,박영환 대구대학교 과학기술연구소 1999 科學技術硏究 Vol.6 No.1

This study investigates fitness of horizontal alinement design elements that has been used in Korea. Those elements are analyzed in consideration of road environment, drivers' characteristics, and traffic condition. In addition, reformed superelevation formula is produced to be fit to the conditions in Korea by considering horizontal alinement design elements on the base of 'AASHTO'. The results are summarized as follow 1. According to drivers' cognition analyzed by Factor analysis, drivers regard that road safety and horizontal alinement elements are the most important facts. 2. Superelevation value which is produced from radius of road curve in research area is shorter than standard superelevation value. Therefore, we should revise and supplement the standard superelevation in aspect of drivers' safety. 3. Superelevation value analyzed by 85 percentile running speed shows higher value than critical superelevation value used in Korea. So, we should upgrade the critical superelevation value.

여행속도에 따른 Q-V관계식 산정에 관한 연구

임채문,정우영,공창환,홍익상 대구대학교 과학기술연구소 1995 科學技術硏究 Vol.2 No.1

The purpose of this study is to estimate a suitable traveling speed model based on using the traffic data collected by test-vehicle traveling method and the data on road geometric and operating characteristics. The conclusions of this study are as follows. In travel speed model(Q-V), regression model (V=9.635+0.0169L - 0.00045Q - 2.1926N, R²=0.76) the important independent variables are speed is closely related with distance, traffic volume and the number of traffic lane, form the result of speed-flow regression analysis, link travel speeds are influenced by link distance, traffic volume, and the number of lanes. As expectedly by the most significant factor influencing link travel speeds. The changing of traveling speed according to section distance is appeared large. According to the result of analysis of travel speed and traffic density model(Q-K), as according the that density increases the travel speed is decreases, on the other hand travel speed increases, the density decreases. The speed equation (u=68.72e^(-k/22.6)) is derived by form the Q-K relationships founded form the study, traffic volume increases as traffic speed increase up to the critical traffic density. If traffic volume decreases when traffic density is abduce the critical traffic density. Using Q-V equation estimated by regression analysis and Q-K equation estimated by density, Traffic value test was accomplished by computer program(TRANPLAN). There were difference between too test, however, the deviation was small. On case of using program, the application extent we considered, is between 25Km/h - 60Km/h. Traffic volumes obtained from TRANPLAN are governably 10% larger than traffic volume estimated form Q-K model. However the difference of the critical traffic density bow Q-K model and TRANPLAN, are relatively small. It is desirable to reduce traffic volume by 0.7∼9% over all, speed range when TRAPLAN is applied in Q-K relationship.

가로특성에 따른 용량 및 속도 Model 구축

임채문,공창환,이영우,홍익상 大邱大學校 科學技術硏究所 1998 科學技術硏究 Vol.5 No.3

The purpose of this study is to develop a simulation model to estimate the capacity and the speed, which are applicable in the urban street transportation planning, for interrupted traffic flow which is influenced by the signalized intersection, and to compare the model with the existinw models.

도로설계요소에 대한 운전자 인식도 분석

임채문,박준,권강훈,홍익상 대구대학교 과학기술연구소 1998 科學技術硏究 Vol.5 No.3

This study presents fundamental data to design for the safe and comfortable road. and to reduce traffic accidents by performing cognition analysis and Factor Analysis of drivers. The results obtained are summarized as follow : 1. According to analysis of investigated road design elements, most drivers have low cognition level in alinement elements of road design. So drivers have to get more information than now about alinement elements of road design, 2. When we design road, it is proved that alinement as well as safety is so important to drivers. Therefore we should design road considering drivers` characteristics.