차량 내비게이션 통행량 자료를 활용한 관측 교통량 적정성 검증 알고리즘 개발

김성민,천승훈 한국도로학회 2020 한국도로학회논문집 Vol.22 No.6

PURPOSES : This study verifies the appropriateness of the observed traffic volume using car navigation traffic volume data. METHODS : In this study, we developed an annual average daily traffic (AADT) estimation model that can verify the total amount of traffic by using navigation traffic volume data. In addition, a method to verify the appropriateness of the observed traffic volume was developed using time-based navigation traffic volume data that can check the characteristics of traffic volume at each point. RESULTS : As a result of the analysis of this study, it was found that 674 of the 697 short-duration survey spots of the freeways were appropriate and that 23 spots needed to be revised. CONCLUSIONS : As a result of the analysis of this study, it was found that there was a strong positive correlation between the observed traffic volume and the car navigation traffic volume. Thus, the appropriateness of the observed traffic was determined by verifying the total amount of observed traffic and the observed traffic volume by time.

주요항만 VTS 업무량 파악을 위한 교통량 연구 분석

박성용(Sung-Yong Park),박진수(Jin-Soo Park),박영수(Young-Soo Park) 한국항해항만학회 2007 한국항해항만학회 학술대회논문집 Vol.1 No.춘계

전국 주요항만의 VTS 업무량 파악을 위하여 대상 항만의 교통량을 분석하였다. 일일 입항척수 현황을 알 수 있는 Port-MIS 자료를 이용하여 조사·분석하였으며, 본 연구에서 분석 요소로 이용한 것은 각 항만별 입항척수, L² 환산교통량 및 위험화물 운반선 입항척수의 3가지를 이용하였다. 먼저 업무량 파악을 위한 첫 번째 우선순위로 사용한 각 항만별 입항척수 항목은 다시 톤수별 척수현황, 선종별 척수 현황, 무선통신일지를 통한 교신량 분석으로 구분하여 조사·분석하였다. 두 번째 우선순위로 입항 척수가 동일한 경우 대형선이 소형선보다 업무부담이 클 것으로 사료되어 L² 환산교통량 (기준선박 선박길이 70m 선박을 1척으로 간주하여 환산)을 이용하여 파악하였다. 세 번째 우선순위로 동일한 입항척수에 동일한 L² 환산교통량인 경우 위험화물 운반선의 입항척수를 파악함으로써 같은 조건일 경우 업무량 예측에 영향을 미친다고 할수 있다. 위의 조사분석한 자료와 교통량 분석 우선순위로 주요 항만 VTS 업무량 경중(輕重)을 정확히 파악하고자 한다. To investigate VTS work-load, traffic volume statistics' taken main ports of Korea. Those data's analyzed and investigated by using Port-MIS data to acknowledge the present condition of daily inbound vessels. In this paper, main factors of analysis are the number of inbound vessels at each port, L2 conversion traffic volume and the number of dangerous cargo carriage. To investigate work-load first priority given to classified ship's tonnage, type of vessels, communication volume of comm log. Second priority given to case of same inbound traffic volume, large inbound ship seems to be burden than small one by using L2 conversion traffic volume(converge as regard to standardized ship's LOA 70m equal 1). The third priority given to investigate with inbound volume of dangerous cargo carrier, it could be influenced to estimate the VTS' work-load, in case of same inbound traffic volume and same L2 conversion traffic volume. This paper accurately investigate to weight of VTS's work-load main ports, using analyzed data and priority of traffic volume analysis.

Analysis of Marine Traffic Feature for Safety Assessment at Southern Entrance of the Istanbul Strait-I

Volkan Aydogdu,박진수,Yavuz Keceli,박영수 한국항해항만학회 2008 한국항해항만학회지 Vol.32 No.7

The Istanbul Strait is one of the important waterways in the world. And its southern entrance has a highly congested local traffic. Till now there are several studies regarding how the Istanbul Strait is dangerous to navigate and how those dangers can be mitigated. But there is no study regarding local traffic which is posing great collision risk. In a certain traffic area, marine traffic safety assessment parameters are traffic volume, frequency of collision avoidance maneuver, traffic density, traffic flow and potential encounter. In this paper local traffic volume, traffic flow and potential encounter number of local traffic vessels and possibility of collision are investigated in order to find degree of danger at the southern entrance of the Istanbul Strait. Finally by utilizing those, risky areas are determined for southern entrance of the Istanbul Strait. Results have been compared to a previous study regarding risk analysis at congested areas of the Istanbul Strait (Aydogdu, 2006) and consistency of the results were presented. The Istanbul Strait is one of the important waterways in the world. And its southern entrance has a highly congested local traffic. Till now there are several studies regarding how the Istanbul Strait is dangerous to navigate and how those dangers can be mitigated. But there is no study regarding local traffic which is posing great collision risk. In a certain traffic area, marine traffic safety assessment parameters are traffic volume, frequency of collision avoidance maneuver, traffic density, traffic flow and potential encounter. In this paper local traffic volume, traffic flow and potential encounter number of local traffic vessels and possibility of collision are investigated in order to find degree of danger at the southern entrance of the Istanbul Strait. Finally by utilizing those, risky areas are determined for southern entrance of the Istanbul Strait. Results have been compared to a previous study regarding risk analysis at congested areas of the Istanbul Strait (Aydogdu, 2006) and consistency of the results were presented.

강우와 통행량이 교통사고 발생에 미치는 영향 연구 -동해고속도로와 영동고속도로의 교통사고 발생 분석을 사례로-

곽하영,조창현 건국대학교 기후연구소 2015 기후연구 Vol.10 No.3

Traffic accidents on the expressways during the high speed driving are severe and more damaging, compared with other traffic accidents. There has been much effort to reduce the traffic accidents by seeking for the cause of the accidents. Apart from drunk driving and driving while drowsy caused by personal carelessness, one of the main causes of the accidents on the expressways is the limit to the straight-ahead. The straight-ahead is much affected by climate and topography. Existing research on this subject investigates the accidents during the driving on the expressways under bad weather, the accidents on the freeways with design problems regarding the topology and grade and the accident frequency varying with traffic volume. The current study suggests a model including precipitation and traffic volume at a time and aims at examining their impacts on the traffic accidents on the expressways by using a binomial logistic regression analysis. The data used were the traffic accident frequency per day over a year on each link of two expressways, Donghae and Yeongdong, which represent Yeongdong and Yeongseo regions of Gangwon Province. The results tell that precipitation and traffic volume significantly affect the occurrence of the traffic accidents. The accident occurrence is also significantly different between the two expressways and even more significantly different between links within each expressway. Further research topics were identified, including the distinction between rainfall and snowfall, the inclusion of mediating variables such as the limit to the straight-ahead due to the precipitation and the differentiation between the degrees of fatality of the traffic accidents.

강우와 통행량이 교통사고 발생에 미치는 영향 연구 - 동해고속도로와 영동고속도로의 교통사고 발생 분석을 사례로 -

곽하영,조창현 건국대학교 기후연구소 2015 기후연구 Vol.10 No.3

Traffic accidents on the expressways during the high speed driving are severe and more damaging, compared with other traffic accidents. There has been much effort to reduce the traffic accidents by seeking for the cause of the accidents. Apart from drunk driving and driving while drowsy caused by personal carelessness, one of the main causes of the accidents on the expressways is the limit to the straight-ahead. The straight-ahead is much affected by climate and topography. Existing research on this subject investigates the accidents during the driving on the expressways under bad weather, the accidents on the freeways with design problems regarding the topology and grade and the accident frequency varying with traffic volume. The current study suggests a model including precipitation and traffic volume at a time and aims at examining their impacts on the traffic accidents on the expressways by using a binomial logistic regression analysis. The data used were the traffic accident frequency per day over a year on each link of two expressways, Donghae and Yeongdong, which represent Yeongdong and Yeongseo regions of Gangwon Province. The results tell that precipitation and traffic volume significantly affect the occurrence of the traffic accidents. The accident occurrence is also significantly different between the two expressways and even more significantly different between links within each expressway. Further research topics were identified, including the distinction between rainfall and snowfall, the inclusion of mediating variables such as the limit to the straight-ahead due to the precipitation and the differentiation between the degrees of fatality of the traffic accidents.

전문가 설문을 활용한 도로교통량 통계자료 개선방안 연구

한대철(Dae-Cheol Han),정도영(Doyoung Jung) 한국산학기술학회 2021 한국산학기술학회논문지 Vol.22 No.8

본 연구에서는 도로교통분야의 기초자료로 활용되는 도로교통량 통계자료의 이용자 관점에서 필요한 정보를 파악하기 위해 교통 관련 전문가를 대상으로 설문조사를 수행하여 현재 도로교통량 통계의 문제점을 진단하고 개선사항을 도출하고자 하였다. 도로교통량 통계 자료 개선을 위해서 도로교통량 통계에서 제공하고 있는 도로 종류별 교통량, 상시조사 교통량, 수시조사 세부자료, 전자지도 서비스를 중심으로 교통관련 전문가의 설문을 통해서 개선사항을 도출하였다. 연구 결과 단기적으로는 방향별 교통량 정보제공, 첨두시간 교통량 정보제공 개선을 도출하였으며, 중장기적으로는 상시조사 및 수시조사 지점 확대, 전자지도 교통량 자료 차종 구분 개선방안을 도출하였다. 본 연구에서는 도로교통량 통계자료를 실제로 이용하는 교통 관련 전문가의 설문조사 수행으로 도로교통량 통계자료의 개선사항을 도출함으로써 향후 도로 계획, 설계, 유지관리 및 도로행정 등 이용자들이 실질적으로 도로교통량 통계자료의 이용 편리성이 증대될 것으로 기대된다. In this study, a survey from traffic experts was conducted to diagnose problems in the current road traffic statistics and derive improvements to identify necessary information from the user"s perspective of the road traffic statistics. To better road traffic statistics, improvements were made through the selection and survey from traffic-related experts focusing on traffic volume, regular survey traffic, occasional survey details, and electronic guidance services provided by road traffic statistics. As a result of the research, the government derived improvements in providing traffic volume information by direction and peak hours in the short term and the mid to long-term is obtained. The current research also obtained measures to improve the classification of electronic map traffic data . Based on this study, it is expected that users such as people from the road planning, design, maintenance, and road administration will be able to use road traffic statistics in the future by surveying " the traffic experts who use road traffic statistics.

기상상황이 관광지 유입교통량에 미치는 영향에 대한 연구

손철,김건후 국토연구원 2014 국토연구 Vol.83 No.-

In this study, we analyzed how daily weather conditions influence the daily inbound highway traffic volume of small sized cars. We used the daily observed weather conditions from Automated Synoptic Observing System operated by Korea Meteorological Administration and recorded inbound highway traffic volume of Gangneung Tollgate managed by Korea Expressway Corporation. We estimated the regression models which include the daily inbound traffic volume as the dependent variable and the observed weather variables such as daily temperature, rainfall, and snowfall as the explanatory variables in addition to other explanatory variables for the days of spring, summer, fall, and winter of 2013 to 2014. The results from the estimated models show that, in case of spring, summer, and fall, the daily traffic volume decreases by 0.4%~0.7% as the daily rainfall increases by 1mm. In case of temperature, the relationship between the daily highest temperature and the traffic volume is weak in the spring. However the relationship between two is positive in case of the fall and winter. Interestingly, the traffic volume is strongly influenced by the temperature of Seoul Metropolitan Area in case of summer. In case of daily snowfall in the winter season, the snowfall of both Wonju area and Gangneung area negatively influences the inbound traffic volume. 본 논문에서는 기상이 강릉시에 유입되는 고속도로 일교통량에 어떤 영향을 미치는가를 분석하였다. 기상 자료는 기상청이 관리하는 ASOS 관측 데이터를 이용하였다. 일유입교통량 자료는 한국도로공사가 제공하는 톨게이트 유입량 자료를 사용하였다. 두 자료를 이용한 회귀모형 추정 결과 다음과 같은 결과를 도출하였다. 기온, 강우, 적설이 강릉의 소형차 유입량에 미치는 영향에 대한 회귀분석 결과는 봄, 여름, 가을의 경우 강우가 1mm 증가함에 따라 유입교통량이 0.4~0.7% 정도 감소하는 것을 보여주었다. 온도가 강릉의 유입교통량에 미치는 영향은 봄의 경우 뚜렷하지 않았다. 여름의 경우 강릉의 온도가 아닌 수도권의 온도가 유입교통량에 영향을 미치는 것으로 나타났다. 가을과 겨울의 경우 온도가 증가할수록 유입교통량이 증가하였다. 적설의 경우 강릉과 원주지역의 적설이 모두 강릉지역 교통유입량에 영향을 미치는 것을 보여주었다.

Analysis of Traffic Noise for Single and Double Layered Porous Pavement with SPB Method -National Route 1, Sejong-Si Section-

In-Kyoon Yoo(유인균),Su-Hyung Lee(이수형),Dae-Seok Han(한대석) 한국산학기술학회 2020 한국산학기술학회논문지 Vol.21 No.9

최근 도로 교통소음 대책으로 다공성포장이 새로운 대안으로 주목받고 있다. 다공성포장은 아스팔트 혼합물 속에 세립자의 비율을 줄여서 여러 개의 공극을 형성하게 하는 포장을 말한다. 이 공극으로 물이 배수되게 하여 교통사고를 줄이고 타이어 노면의 마찰 소음을 줄여주는 역할을 하게 된다. 저소음포장이 일반적으로 활발히 적용되기 위해서는 소음저감 효과에 대한 많은 검증이 필요하다. 본 연구에서는 단층 저소음포장과 복층 저소음포장의 소음저감 효과를 분석하기 위해서 수행되었다. 먼저 단틍 저소음포장과 복층 저소음포장이 시공되어 있는 세종구간을 선정하고 도로변에서 도로교통 소음을 측정하는 방식인 SPB방법으로 교통소음을 측정하였다. 교통영향요소로는 교통량, 속도 그리고 중차량 혼입률을 측정하였다. 측정결과, 복층저소음포장이 단층저소음포장보다 평균 7.95dB(A) 작게 평가되었다. 95% 신뢰도 수준에서는 7.57dB(A) 작게 평가되었다. 도로교통 소음에 미치는 영향요소로는 속도나 대형차 혼입률 보다는 교통량이 가장 크게 영향을 미쳤다. 교통량이 증가할수록 소음은 모두 증가했지만 두 포장 사이의 소음차이는 점차 감소하였다. 도로교통소음에 영향을 미치는 요소로는 교통요소보다 도로포장의 차이가 가장 크게 나타났다. 본 연구를 통해서 도로교통 소음을 줄이기 위한 대책으로 교통속도를 줄이거나 중차량의 통행을 제한하거나 교통량을 줄이는 것보다 도로포장을 바꾸는 것이 가장 효과적인 방법임을 알았다. 이를 검증하고 정량화하기 위한 광범위한 연구가 필요하다. Porous pavement (PP) has attracted attention as a new alternative measure against road traffic noise. PP refers to pavement that reduces the fines in the asphalt mixture to form voids. These voids can reduce traffic accidents and friction noise. For active application, verification of the noise reduction effect is required. In this study, the noise reduction of single-layer PP(SLPP) and double layer PP(DLPP) was analyzed. First, the Sejong section was selected, and traffic noise was measured using the SPB method on the roadside. The traffic volume, speed, and mixing ratio of large vehicles were measured. As a result, the DLPP was evaluated to be 7.95 dB(A) smaller on average and 7.57dB(A) smaller at the 95% reliability level than the SLPP. The traffic volume was more influential than the speed and the mixing rate of large vehicles. As the traffic volume increased, the noise increased, but the difference in noise between the two pavements decreased gradually. The results showed that the most effective way to reduce road traffic noise is to change the road pavement rather than reduce traffic speed, restrict traffic for heavy vehicles, or reduce traffic volume.

Analysis of Marine Traffic Feature for Safety Assessment at Southern Entrance of the Istanbul Strait-I

Aydogdu, Volkan,Park, Jin-Soo,Keceli, Yavuz,Park, Young-Soo Korean Institute of Navigation and Port Research 2008 한국항해항만학회지 Vol.32 No.7

The Istanbul Strait is one of the important waterways in the world. And its southern entrance has a highly congested local traffic. Till now there are several studies regarding how the Istanbul Strait is dangerous to navigate and how those dangers can be mitigated. But there is no study regarding local traffic which is posing great collision risk. In a certain traffic area, marine traffic safety assessment parameters are traffic volume, frequency of collision avoidance maneuver, traffic density, traffic flow and potential encounter, In this paper local traffic volume, traffic flow and potential encounter number of local traffic vessels and possibility of collision are investigated in order to find degree of danger at the southern entrance of the Istanbul Strait. Finally by utilizing those, risky areas are determined for southern entrance of the Istanbul Strait. Results have been compared to a previous study regarding risk analysis at congested areas of the Istanbul Strait (Aydogdu, 2006) and consistency of the results were presented.

GPS Trajectory Data 기반 통행비용함수 보정방안

정재은(JUNG, Jaeeun),오태호(OH, Taeho),김인희(KIM, Inhi) 대한교통학회 2021 대한교통학회지 Vol.39 No.4

본 연구는 장래교통수요 예측 기법의 4단계 추정법 중 마지막인 통행배정 결과에 가장 밀접한 통행비용함수(Volume delay function, VDF)의 정확한 정산방안을 제시하였다. 그간 VDF를 기반으로 가상환경 안의 교통 네트워크에 거시적 교통흐름을 할당하여 각 링크에서 계산되어지는 통행시간을 이용하여 통행을 배정하였다. 통행시간을 기반으로 할당된 교통량은 실제 교통량과 비교해서 그 오차를 줄이는 정산작업을 수반한다. 해외 선진국은 여러 가지 최적화기법을 통하여 각 지역의 교통특성을 잘 반영하도록 정산작업을 하고 있으나 우리나라는 KTDB에서 제공하는 획일화된 계수값들을 사용하고 있는 실정이다. 정해진 VDF 상관계수값은 지역별로 다른 통행행태를 제대로 반영하지 못하고 이로 인해 부정확한 장래교통수요를 수행하고 있다. 따라서 본 연구는 이러한 점을 극복하고자 GPS 궤적데이터(Trajectory data)를 활용하여 지역 내 도로위계에 따라 최적의 값을 정산하는 방법론을 개발하였다. 개발된 알고리즘을 연속류와 단속류에 적용하고 효과평가를 위해 평균제곱근오차(Root Mean Square Error, RMSE)를 활용하였다. 그 결과, 연속류는 GPS기반 속도와 시뮬레이션기반 속도 간의 평균제곱근오차는 약 9.67이나, 단속류는 38.38로 상대적으로 높았다. 이는, 교통신호와 같은 통행에 영향을 주는 요소가 단속류에서 고려되지 않았기 때문으로 판단된다. 향후에는 이를 고려하여 단속류 구간을 세분화하여 통행속도 보정을 위한 VDF 상관계수 값 도출 필요할 것으로 판단된다. This study proposed a method for accurate calibration of the volume delay function (VDF), which has the effect on the result of traffic assignment. As it is the last step of the traditional four step model for traffic demand prediction. Through the VDF, macroscopic traffic flow is allocated to the traffic network in the virtual environment using the travel time calculated at each link. The traffic volume calculated based on the travel time brings a calibration task that reduces the error compared to the actual traffic volume. Many developed countries are performing calibration task to reflect the traffic characteristics of each region through various optimization techniques, but Korea has been using uniform coefficient values provided by KTDB. The determined value of the VDF correlation coefficient does not properly reflect the different traffic behaviors by region, and this leads to inaccurate future traffic demand. Therefore, in order to overcome this point, this study developed a methodology to calculate the optimal value according to the road hierarchy in the region using GPS trajectory data. The developed algorithm was applied to interrupted flow and continuous flow, and Root Mean Square Error (RMSE) was used for effect evaluation. As a result, the RMSE between the GPS-based speed and the simulation-based speed for interrupted flow was higher than continuous flow. It was 38.38 and 9.67, respectively. This is because factors, such as traffic signals and localized driving behavior are not considered in the interrupted flow. In the future, it is necessary considered diverse factors at interrupted flow to derive the value of the VDF correlation coefficient to get accurate travel speed.