• Journal of Korean Society of Transportation
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• v.26 no.3
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• pp.169-178
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• 2008

Level of Service (LOS) is one of ways to evaluate operational conditions. It is very important factor in evaluation especially for the facility of highways. However, some studies proved that ${\upsilon}/c$ ratio and accident rate is appeared like a second function which has a U-form. It means there is a gap between LOS and safety of highway facilities. Therefore, this study presents a method for evaluation of a signalized intersection which is considered both smooth traffic operation (delay) and traffic safety (accident). Firstly, as a result of our research, accident rates and EPDO are decreased when it has a big delay. In that reason, it is necessary to make a new Level of Service included traffic safety. Secondly, this study has developed a negative binominal regression model which is based on the relation between accident patterns and stream. Thirdly, standards of LOS are presented which is originated from calculation between annual delay costs and annual accident cost at each intersection. Lastly, worksheet form is presented as an expression to an estimation step of a signalized intersection with traffic accident prediction model and new LOS.

• Journal of Korean Society of Transportation
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• v.23 no.2
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• pp.95-106
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• 2005

Road accidents are considered as the result of a complex interplay between road, vehicle, environments, and human factors. Little study, however, has been carried out on the attributes of human factor compared to the road geometric conditions and traffic conditions. The previous researches focused on mainly both traffic and geometric conditions on specific location. Therefore, it's hard to explain phenomenon of the high traffic accident rates where road and traffic conditions are good. Because of these reasons, accident analysis has contributed on geometric improvement and has not contributed on traffic management such as selection of attention section, driver napping alert, etc. The freeway incident management is also associated with reliable prediction of incident occurrences on freeway sections. This paper presents a method for estimating the effect of trip length on freeway accident rate. A PAR (Potential Accident Ratio), the new concept of accident analysis, considering TLFDs (Trip Length Frequency Distributions) is suggested in this paper. This approach can help to strengthen freeway management and to reduce the likelihood of accidents.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.20 no.1
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• pp.100-118
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• 2021

In this study, PM accidents (1,603case) and bicycle accidents (14,672case) that occurred in the last three years were analyzed to determine the characteristics of PM traffic accidents. In particular, PM traffic accidents were divided into perpetrators and victims to determine the characteristics in detail. For PM accidents, the analysis was conducted on the status of each road grade, road type, weather condition, accident type, day and night occurrence, and vehicle type. The number of PM accidents that occurred in 2019 increased by 129%, and deaths increased by more than 200% compared to the previous year. The proportion of pedestrian accidents among PM traffic accidents was higher than that of bicycle accidents. Therefore, regulations on PM traffic are necessary. For the 20 deaths of PM, a detailed analysis was conducted to analyze the factors of traffic accidents. PM fatalities occurred in 50% of vehicle accidents, and 7 out of 10 vehicle accidents occurred at night. This is believed to have been caused by falling or overturning due to an obstacle, such as a depression in the road pavement or a speed bump.

• The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.14 no.3
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• pp.59-67
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• 2000

최근 경제성장과 더불어 자동차 보유대수는 '90년대부터 '98년까지 8년간 매년 15% 증가하여 3배에 달한 반면 도로는 총 연장이 매년 5.5% 증가하는데 그침으로써 급증하는 교통수요를 충족시키기에 크게 미흡하여 도로 환경이 열악한 실정으로 도로의 안전성 향상을 위한 종합적이고 체계적인 노력이 절실히 필요한 실정이다. 이에 따라 건설교통부에서는 쾌적하고 안전한 도로를 만들기 위한 노력의 일환으로 사고 많은 지점의 개선, 도로안전시설의 정비·확충 등 도로 교통의 안전성 향상을 위한 사업들을 지속적이고 체계적으로 추진하고 있으며, 금번에는 도로조명시설의 설치 및 관리에 관한 일반적 기술기준을 마련하게 되었습니다. 일선 실무자들이 이를 적극적으로 활용하여 도로 이용자들에게 보다 좋은 도로 환경을 제공함으로써 교통사고를 줄이고 원활한 교통 소통을 도모하는데 이바지할 수 있기를 바라며, 도로 조명시설에 관한 내용을 발췌하여 소개하고자 합니다.

• Journal of Korean Society of Transportation
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• v.34 no.4
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• pp.291-303
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• 2016

The number of traffic accidents at intersections has been increased over the past decade, and in 2014, accounted for 44% of the total traffic accidents. In addition, since most of road accident black spots include signalized intersections, the improvement of safety on signalized intersection is top priority for national road safety program in Korea. For the decision of most effective action plan for the safety of signalized intersection, this study conducted meta-analyses to assess the effects of various road safety facilities at signalized intersection on traffic accidents. We selected 19 articles regarding the prediction of traffic accidents at signalized intersection and calculated 34 individual effect sizes on 8 variables included in the articles. The results found that there was a statistically significant negative relationship between the occurrence of traffic accident and the presence of all of road safety facilities except an exclusive left turn bay. It shows that most of the road safety facilities could prevent traffic accidents, and intersection channelization has the most effective on the reduction of traffic accidents followed by left-turn acceleration lane, lightning, crosswalk, exclusive right-turn lane and median barrier.

• 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.

• 도로교통
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• s.92
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• pp.24-36
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• 2003

• 도로교통
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• s.82
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• pp.23-33
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• 2000

• Journal of the KSME
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• v.32 no.10
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• pp.837-846
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• 1992

고령화 혹은 국제화와 같은 변화 양상은 다가오는 21세기의 새 시대를 가치기준에서 뿐만 아니라 사회환경까지도 새로운 것을 추구하도록 요구해 가고 있다. 이것은 도로교통에 있어서도 마찬 가지로 지금까지 양적인 팽창 위주로 전개되던 것이 효율을 중시하지 않으면 안 되게 되었으며 특히 20세기 후반들어 반도체 기술과 함께 급격한 발전을 거듭하고 있는 컴퓨터 기술은 정보 통신 기술과 함께 도로교통의 새로운 장을 열어 갈 것으로 예측된다. 21세기의 도로 교통을 생 각할 때, 차량 보급 대수의 증가와 함께 지금도 교통사고가 커다란 사회 문제로 대두되고 있는 추세로 볼 때, 중심이 되는 단어는 역시 '안전'과 '환경'이겠지만 그 가운데에도 교통 사고의 저 감은 무엇보다 시급한 과제라 할 수 있으며 대기 오염을 비롯한 물리적 환경의 개선과 보다 원 활하고 쾌적하게 달릴 수 있는 교통 환경의 실현도 중요한 과제가 될 것이다. 이 글에서는 이 러한 관점에서 21세기의 도로교통과 이를 이루어가기 위한 기술적 과제들을 살펴보고자 한다.

• Journal of the Korean Association of Geographic Information Studies
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• v.13 no.2
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• pp.41-53
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• 2010

Traffic safety assessment is often accomplished by analyzing the number of crashes occurring in some geographic space over certain specific time duration. In this paper, we introduce a procedure that can efficiently analyze spatial and temporal changes in traffic crashes before-and-after implementation of a certain traffic controlling measure. For the analysis, crash frequency data before-and-after closing a major highway around St. Louis in Missouri was collected through Transportation Management System(TMS) database that is maintained by Missouri Department of Transportation (MoDOT). In order to identify any spatial and temporal pattern in crashes, each crash is pinpointed on a map using the dynamic segmentation in GIS. Then, the identified pattern is statistically confirmed using an analysis of variance table. The advantage of this approach is to easily assess spatial and temporal trend of crashes that are not readily attainable otherwise. The results from this study can possibly be applied in enhancing the highway safety assessment procedure. This paper also makes several suggestions for future development of a comprehensive transportation data system in Korea which is similar to MoDOT's TMS database.