Modeling Approach Capacity of Left most Shared Lane at Signalized Intersection with Channelized Left-turn Lane under Mixed Traffic Condition
Approach capacity of an intersection can be enhanced by adding a left turn lane with a specified length to the channelized intersection with flashing amber throughout entire cycle. But if there is no specified length of left-turn lane, through lane vehicles block the entrance of left-turn lane under heavy traffic conditions. Highway Capacity Manual does not address this issue. Frequent blockage of left turn channelization entrance increases the queue length, making it disadvantageous to left turn vehicles. Using conventional methods to calculate approach capacity without considering the impact of blockage would result in overestimation of the approach capacity. This research presents a probabilistic capacity model for signalized intersections with channelized left-turn lanes. The approach capacity model was developed based on the left-turn lane length and the proportion of left-turn traffic by considering the probability of blockage. Subsequently, the proposed capacity models were validated using VISSIM simulation.
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- Record URL:
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Authors:
- PREMACHANDRA, Niroshana
- WICKRAMASINGHE, Vasantha
- JAYATILAKE, Sewmini
- Publication Date: 2022
Language
- English
- Japanese
Media Info
- Media Type: Digital/other
- Features: Figures; Maps; Photos; References; Tables;
- Pagination: pp 1073-1091
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Serial:
- Journal of the Eastern Asia Society for Transportation Studies
- Volume: 14
- Publisher: Eastern Asia Society for Transportation Studies
- EISSN: 1881-1124
- Serial URL: https://www.jstage.jst.go.jp/browse/easts/-char/en
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Publication flags:
Open Access (libre)
Subject/Index Terms
- TRT Terms: Highway traffic control; Left turn lanes; Signalized intersections; Traffic lanes; Vehicle mix
- Subject Areas: Highways; Operations and Traffic Management;
Filing Info
- Accession Number: 01854469
- Record Type: Publication
- Source Agency: Japan Science and Technology Agency (JST)
- Files: TRIS, JSTAGE
- Created Date: Aug 10 2022 4:40PM