The Effect of Acceleration Lanes on Entrance Ramp Operation
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서지정보
ㆍ발행기관 : 대한교통학회
ㆍ수록지정보 : 대한교통학회지 / 26권
ㆍ저자명 : Chi-Hyun Shin
ㆍ저자명 : Chi-Hyun Shin
목차
1. INTRODUCTION AND OVERVIEW2. BACKGROUND AND LITERATURE REVIEW
3. DATA COLLECTION, REDUCTION AND ANALYSIS
4. MODEL DEVELOPMENT
5. CONCLUSIONS AND RECOMMENDATIONS
REFERENCES
APPENDIX
한국어 초록
A ramp may be described as a length of roadway providing an exclusive connection between two roadway facilities. As the 1985 HCM depicts, a ramp may consist of up to three geometric elements of interest: the ramp-freeway junction, the ramp proper, and the ramp-street junction. Among the three elements, the ramp-freeway junction is perhaps the most important area in terms of traffic operation because this is an area of competing traffic demand for space, which creates conflict or turbulence.A ramp-freeway junction is generally designed to permit high speed merging or diverging movements to take place with a minimum of disruption to the adjacent freeway traffic stream and a maximum safety to the drivers. An entrance ramp junction inherently bears more disruption than an exiting ramp junction and often leads to breakdown in operation reducing mobility drastically. Accordingly, entrance ramp junctions have been a prime subject of interest to many traffic engineers. A typical entrance ramp junction consists of three kinds of paved roadways; the freeway section, the ramp proper, and the acceleration lane connecting the two.