• 대한교통학회지
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• 제34권5호
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• pp.449-464
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• 2016

본 연구의 목적은 혼잡 교차로에 직결형 회전교차로의 적용 가능성을 평가하고 적용 가능한 교통량 범위를 산정하여 도입기준을 마련하는데 있다. 이를 위해 진입 교통량 및 주 부도로 교통량 비율, 좌회전 교통량 비율에 따라 다양한 시나리오를 작성하고 직결형 회전교차로와 회전교차로, 신호교차로에 대한 시뮬레이션을 수행하여 지체시간을 비교 분석하였다. 분석 결과 주 부도로 교통량 비율이 6:4인 경우의 차로당 교통량이 400대/시에서는 좌회전 비율 30%까지, 500대/시에서는 20%까지, 600대/시에서는 10%까지 직결형 회전교차로의 지체시간이 가장 작게 나타났다. 주 부도로 비율이 7:3인 경우에는 차로당 교통량이 400-600대/시에는 6:4와 동일하게 나타났으나 300대/시의 좌회전 비율 30%, 700대/시인 경우의 10%에서 직결형 회전교차로가 가장 작게 나타났다. 주 부도로 비율 8:2인 경우에는 차로당 교통량이 400-500대/시, 700대/시인 경우에는 7:3과 동일하게 나타났으나 300대/시의 10-30%, 600대/시에는 좌회전 비율이 20% 인 경우에도 가장 작게 나타났다. 종합해보면 주 부도로의 교통량 비율 차이가 커질수록 좌회전 교통량 비율과 교통량이 적을수록 직결형 회전교차로의 교통 처리 능력이 높게 나타났다. 따라서 주 부도로 교통량 차이가 크고 주도로 직진교통량 비율이 큰 혼잡교차로에 직결형 회전교차로의 도입 시 효과가 클 것으로 기대된다.

• 한국산업융합학회 논문집
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• 제5권1호
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• pp.53-64
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• 2002

The purpose of this study was to predict the future urban activities effectively and rationally. For the purpose, a simulation model, based on SD, was built by integrating economic activities, land use and traffic of a city and by dividing Daegu Metropolitan City into seven districts and one county. To identify the effect of the development of a new city in the Dalsung County area, the future population and traffic volume of the city were predicted, using the model. The results are summarized as follows. The future population according to the development of a new city in the Dalsung County area was predicted, and the effects before and after the development twenty years later were compared. The future population of the Dalsung County was found to have slightly increased, whereas that of the adjoining Dalsuh Metropolitan District was found to has slightly decreased. For the other districts, there were no changes of the future population. It was found, therefore, that the development of a new city would have no effect on other districts. Then, the traffic volume according to the development of a new city in the Dalsung County area was also predicted. It was found that in the initial stage the traffic volume would increase with the increase in population of Dalsung County. It was predicted that particularly,. the traffic volume for the purpose of business would greatly increase. The traffic volume of Dalsuh Metropolitan District showed a slight decrease, whereas for the other districts, there were no changes of the traffic volume.

• 대기
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• 제31권2호
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• pp.157-170
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• 2021

To investigate the effect of snowfall on the traffic of general roads in Gangwon-do, case analysis was performed in Gangneung, Pyeongchang, and Chuncheon using ASOS (Automated Synoptic Observing System) snowfall data and VDS (Vehicle Detector System) traffic data. First, we analyzed how much the traffic volume and speed decrease in snowfall cases on regional roads compared to non-snow cases, and the characteristics of monthly reduction due to snowfall were investigated. In addition, Pearson correlation analysis and regression analysis were performed to quantitatively grasp the effect of snowfall on traffic volume and speed, and sensitivity tests for snowfall intensity and cumulative snowfall were performed. The results showed that the amount of snowfall caused decrease both in the traffic volume and speed from usual (non-snowfall) condition. However, the trend was different by region: The decrease rate in traffic volume was in the order of Gangneung (17~22%), Chuncheon (14~17%), and Pyeongchang (11~14%). The decrease rate in traffic speed was in the order of Chuncheon (9~10%), Gangneung (8~9%), Pyeongchang (5~6%). No significant results were found in the monthly decrease rate analysis. In all regions, traffic volume and speed showed a negative correlation with snowfall. It was confirmed that the greater the amount of traffic entering the road, the greater the slope of the trend line indicating the change in snowfall due to the traffic volume. As a result of the sensitivity test for snowfall intensity and cumulative snowfall, the snowfall information at intervals of 6-hours was the most significant.

• 대한교통학회지
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• 제12권1호
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• pp.97-116
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• 1994

Today advanced traffic management systems are required because of a high increase in traffic demand. Accordingly, the objective of this study is to take advantage of image processing systems and present image processing methods available for collection of the data on traffic characteristics, and then to investigate the possibility of traffic flow analysis by means of comparison and analysis of measured traffic flow. Data were collected at two places of Daegu city and Kyongbu expressway by using VTR. Rear view (down stream) and frontal view (up stream) methods were employed to compare and analyze traffic characteristics including traffic volume, speed, time-headway, time-occupancy, and vehicle-length, by analysis of measured traffic flow and image processing respectively. Judging from the results obtained by this study, image processing techniques are sufficient for the analysis of traffic volume, but a frame grabber equipped with high speed processor is necessary as well, with low level system judged to be sufficient for traffic volume analysis.

• 한국환경보건학회지
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• 제26권4호
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• pp.134-140
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• 2000

The increase in traffic is a worldwide phenomenon. In Korea, it has been increased by 20% per annual in recent 1990’s and approximately 10 millions cars had been registered until 1997. This traffic could easily affect and contribute the local outdoor air quality(QAQ) concerned. The QAQ in highway in one of the examples and the subject in this study. The seoul tollgate located at the north-end of Keypngbu Highway was selected for the study. In case of highway tollgate, the local air pollution could be directly affected by the traffic to approach, wait and start the tollgate. Nitrogen dioxide (NO$_2$) concentration exceeded the EAQS(Environmental Air Quality Standards), but overall indoor air quality was a little better than the outdoor air quality. The measured TSP concentration was much higher than that of the EAQS. To apply a management to a air quality problem of Seoul tollgate, it was predicted air quality with traffic volume and weather condition. It was calculated NO$_2$ emission with traffic volume and predicted in and out of booth by CALINE3 at the Seoul tollgate. To make a comparison between measured and predicted concentration, the prediction was good. It was shown that NO$_2$ concentration was high in the morning at the from Seoul direction and in the evening at the to Seoul direction. it was thought that NO$_2$ concentration variation was reflected according to the traffic volume.

• 한국ITS학회 논문지
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• 제17권2호
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• pp.32-38
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• 2018

국도의 분류에 대한 연구는 계속되어왔으나 도시간선도로의 분류에 대한 연구는 미진한 편이다. 교통량의 증가로 도시간선도로는 간선도로로서의 역할을 제대로 수행하지 못하고 있다. 본 논문에서는 교통특성변수를 사용한 군집분석을 이용하여 도시간선도로의 기능을 정립하였다. 서울시내 55개의 간선도로의 기능을 정립하기 위해 교통량, 주말계수, 속도 계수 등 교통특성을 사용하였다. 본 논문의 결과와 AADT를 사용한 방법의 결과를 비교하였는데 AADT를 사용한 방법은 전체 차선의 교통량에 의해 특성을 분류하였으나 본 논문에서 실제 교통량을 반영한 차선당 교통량을 주요 변수로 사용하여 결과를 도출하였다. 또한 서울시 간선도로 기능분류와 본 논문의 결과를 비교하여 교통특성이 반영되었음을 증명하였다. 결과적으로 본 논문에서 제시한 방법은 현재 간선도로 기능분류 방법보다 교통특성을 나타내는데 효과적이며 기능분류체계는 도로확장 및 계획 설계에 도움이 될 것으로 판단된다.

• 대한교통학회지
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• 제30권3호
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• pp.31-41
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• 2012

VMS, 교통방송(라디오), SNS 등 교통정보제공을 통한 교통량 분산에 대한 관심이 높아짐에 따라 교통정보에 대한 운전자의 반응행태 및 효과에 대한 연구가 지속적으로 이루어지고 있다. 본 연구는 FTMS 및 TCS 데이터가 구축되어 있는 전국 고속도로 본선부를 분석 대상으로, FTMS 데이터와 TCS 데이터를 이용하여 경로전환 교통량과 그에 따른 경로전환율을 추정하는 방법론을 제시하고, 실제 대상구간의 경로전환율을 산출하여 시간 및 공간적 경로 전환율 변동에 대한 특성을 분석하였다. 본 연구에서는 교통정보 제공 이후, 해당 시간대의 평균 유출교통량에 비해 유출교통량이 일시적으로 증가한 경우 이 편차(도로교통상황의 동적인 특성으로 인한 편차 고려)는 교통정보 제공으로 인한 경로전환 교통량이라 정의하고, 본선 교통량과의 비율을 경로전환율로 계산하였다. 시간흐름에 따른 경로전환율 변화를 분석한 결과, 혼잡상황에 대한 교통정보를 먼저 얻게 되는 상류부 IC에서의 초기 경로전환율(유출교통량) 변화는 일시적으로 매우 큰 것으로 나타났다. 이후 공간적 시간적 흐름에 따라 상류부 IC에서의 경로전환율의 변화는 하류부 IC에서의 경로전환에 영향을 미치고, 이는 다시 상류부 IC에서의 변화를 유도하는 등의 경로전환 순환체계(feedback control loop)가 있음을 확인하였다.

• 대한교통학회지
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• 제7권2호
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• pp.29-43
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• 1989

The purpose of this study is to construct a forecasting model involved in a diverted traffic volume of the 2nd intra-urban expressway in construction presently, in the case of the future prediction of traffic demand for the intra-urban expressway in Pusan. In this study, the model involved in a diverted traffic volume is constructed trustworthy. And the future traffic demand of intra-urban expressway by this model was forecasted 114,005 volume/daily in 1996 and 147,090 volume/daily in 2001. However, it will made a study more and more concretely for practicality and limitation as well as construction of the forecasting model considered an intrinsic problem of an observational error and necessity of survey for much more socio-economic data, the traffic volume on all orad and OD pairs in Pusan.

• 한국항해항만학회지
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• 제31권5호
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• pp.353-359
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• 2007

컨테이너항만의 물동량이 증가하는 추세에서 장래에 발생될 컨테이너선박의 교통량을 예측한다면 항만의 효율적인 계획과 운영관리를 사전에 수립할 수 있다. 해상교통 관점에서도 컨테이너선박의 입 출항 척수를 장기적으로 추정하고, 이를 근거로 해상교통수요를 원활하게 처리할 수 있는 합리적인 방안을 계획할 수 있다. 따라서 본 연구에서는 전국항만 기본계획에서 제시된 부산항, 광양항, 인천항의 컨테이너 물동량 예측자료를 토대로 각 항만에 대한 컨테이너선의 장래 입 출항 교통량을 추정하였다. 이를 위해서 컨테이너선박의 척당 물동량 추세를 ARIMA 모형을 통해 예측하고, 계절지수를 산출하였다. 이와 같이 예측된 척당 물동량을 2011년, 2015년, 그리고 2020년의 컨테이너 물동량에 대비시켜 발생예상의 해상교통량을 추정하였다.

• 한국도로학회논문집
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• 제17권1호
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• pp.91-98
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• 2015

PURPOSES : Although signalized intersections have been considered the best way to control traffic volume in urban areas for several decades, roundabouts are currently being discussed as an alternative way to control traffic volume, especially when traffic is light. Because a roundabout's efficiency depends on the load geometry as well as the traffic volume, design guidelines for roundabouts are recommended only if the incoming traffic volume is very low. It is rare to substitute a roundabout for an existing signalized intersection in urban areas. This study aims to estimate the benefits from the transformation of an existing signalized intersection into a roundabout in an urban area. When there is a more moderate volume of traffic, roundabouts can be effectively used by optimizing signals located at an approaching roadway. METHODS : The methodologies of this paper are as follows: First, a signalized intersection was analyzed to determine the traffic characteristics. Second, the signalized intersection was transformed into a roundabout using VISSIM microscopic traffic simulation. Then, we estimated and analyzed the effects and the performance of the roundabout. In addition, we adjusted a method to improve the benefits of the transformation via the optimization of signals located at an approaching road to control the incoming traffic volume. RESULTS : The results of this research are as follows: The signal-optimized roundabout improved delays compared with the signalized intersection during the morning peak hour, non-peak hour, and evening peak hour by 1.78%, 12.45%, and 12.72%, respectively. CONCLUSIONS : According to the simulation results of each scenarios, the signal-optimized roundabout had less delay time than the signalized intersection. If optimized signal control algorithms are installed in roundabouts in the future, this will lead to more efficient traffic management.