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- 주제어 : deceleration transition curve (검색결과 2 건)
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이점호 한국도로학회 2008 한국도로학회논문집 Vol.10 No.3
I study for design criteria and research about Interchange diverging area of express highway and freeway. the most recent, at interchange diversion of express highway and freeway, design criteria and researches are focus on safety guarantee a point of view movement dynamics of vehicle and road geometric as to transition section, deceleration section, curve radius, nose section, outflow angle etc. that is, design criteria and research of Interchange diverging area have not consider a point of view movement dynamics of vehicle and road geometric and driver. so that I will be focus characteristic of runing speed on trasion curve. and I will consider vehicle running speed characteristics and study problem of Interchange diverging area design criteria. For this study, First, analysis meaning about theory of now design criteria, Second, look at vehicle running speed and traffic accident characteristics of Interchange diverging area , Third, propose new deceleration transition curve design method get along vehicle running speed characteristics of Interchange diverging area. new deceleration transition curve design method put out new outcoums. that is, I definite cause to safety new deceleration transition curve design method better than pressently, used design criteria of Interchange diverging area. especially, deceleration transition curve design criteria produced good result in the running speed 50km/h,40km/h, that is inertia better than inertia of present used design criteria. and deceleration transition curve is extended better than present transition curve criteria. so that new deceleration transition curve design method safety is good better than the past method safety. I study for design criteria and research about Interchange diverging area of express highway and freeway. the most recent, at interchange diversion of express highway and freeway, design criteria and researches are focus on safety guarantee a point of view movement dynamics of vehicle and road geometric as to transition section, deceleration section, curve radius, nose section, outflow angle etc. that is, design criteria and research of Interchange diverging area have not consider a point of view movement dynamics of vehicle and road geometric and driver. so that I will be focus characteristic of runing speed on trasion curve. and I will consider vehicle running speed characteristics and study problem of Interchange diverging area design criteria. For this study, First, analysis meaning about theory of now design criteria, Second, look at vehicle running speed and traffic accident characteristics of Interchange diverging area , Third, propose new deceleration transition curve design method get along vehicle running speed characteristics of Interchange diverging area. new deceleration transition curve design method put out new outcoums. that is, I definite cause to safety new deceleration transition curve design method better than pressently, used design criteria of Interchange diverging area. especially, deceleration transition curve design criteria produced good result in the running speed 50km/h,40km/h, that is inertia better than inertia of present used design criteria. and deceleration transition curve is extended better than present transition curve criteria. so that new deceleration transition curve design method safety is good better than the past method safety.
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박재범,이승준,강정규,김일환 대한교통학회 2007 大韓交通學會誌 Vol.25 No.1
Freeway diverging areas are very vulnerable to traffic accidents due to abrupt vehicle speed changes and geometric changes. Therefore, in designing diverging areas, much attention should be paid to safety. The present design criteria about freeway diverging areas regulate transition sections for lane changes, deceleration lanes, transition curves for direction changes, and other similar items. However, the design criteria were often violated in implementation because of ambiguities in the criteria. This study aims at clarifying and improving the present design criteria for freeway diverging areas. For this, field survey data and traffic accident data for diverging areas were analyzed. 고속도로 분류부는 고속에서 저속으로의 급격한 감속, 양호한 기하구조에서 취약한 기하구조로의 급격한 선형변화가 발생하는 구간으로, 고속도로 구성요소 중 사고위험이 매우 높은 구간에 해당된다. 따라서 분류부 설계시는 안전하고 원활한 교통흐름이 이루어지도록 세심한 주의를 기울여야 함은 물론 이의 달성을 위한 설계기준이 수립되어야 한다. 이에 따라 현 도로설계기준에서는 차로변경을 위한 변이구간, 감속을 위한 감속구간 그리고 무한 곡선반경에서 유한곡선반경으로의 원활한 차량주행궤적 변경을 위한 완화곡선 등 이를 위한 설계기준을 제시하고 있으나, 실제 그 적용에 있어서는 설계기준상의 각 구간별 구성에 대한 정의가 명확하지 않아 분류부의 각 구성요소가 중첩되어 설계되고 있다. 이러한 설계기준상의 문제로 인한 각 구성요소간 혼재는 현 설계기준에서 의도하고 있는 분류부에서의 역할을 충분히 발휘하지 못하게 하는 결과를 초래하고 있으며, 일관된 선형을 기대하는 운전자에게 혼동을 야기시키는 등 많은 고속도로 분류부 현장에서 안전상 문제점으로 작용하고 있다. 따라서 본 연구에서는 고속도로 분류부에서의 실측 현장조사 데이터를 바탕으로 분류부 차량주행행태 특성 분석 및 사고예측모형의 개발을 통해 다양한 교통조건 및 기하구조 조건을 고려한 분류부 설계기준 개선안을 제시하였다.
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