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![Page 1: Center for Advanced Transportation Education and Research University of Nevada, Reno Student Paper Yue Zhao Exploration of Pedestrian Gap Acceptance at](https://reader037.vdocument.in/reader037/viewer/2022103022/56649d165503460f949ec1d1/html5/thumbnails/1.jpg)
Center for Advanced Transportation Education and ResearchUniversity of Nevada, Reno
Student PaperYue Zhao
Exploration of Pedestrian Gap Acceptance at Two-Way Stop-Controlled Intersections using
Simulation
Yue ZhaoGraduate Research Assistant
Center for Advanced Transportation Education and Research
Department of Civil & Environmental Engineering
University of Nevada, Reno
Email: [email protected]
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Center for Advanced Transportation Education and ResearchUniversity of Nevada, Reno
Student PaperYue Zhao
Outline
Background
Simulation Model
Data Analysis
Conclusions
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Center for Advanced Transportation Education and ResearchUniversity of Nevada, Reno
Student PaperYue Zhao
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Background
TWSC intersection: high degree of discretion to individual drivers and pedestrians in how they react to conflict traffic streams.
Pedestrian behavior plays an important role in analyzing the operations of two-way stop-controlled intersections: pedestrian blockage.
• Major-street vehicles: stop
• Minor-street vehicles: lose the opportunity to seek gaps
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Center for Advanced Transportation Education and ResearchUniversity of Nevada, Reno
Student PaperYue Zhao
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Background
Pedestrian gap acceptance: time between the head of consecutive vehicle
Arrive-Wait-Service-Depart
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Center for Advanced Transportation Education and ResearchUniversity of Nevada, Reno
Student PaperYue Zhao
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Background
Methodology
• Simulation models: Vissim and Corsim micro-simulation environment.
Objectives:
• Analyzing and comparing diverse pedestrian gap acceptance behaviors at TWSC locations.
• Measure the acceptable gap and rejected gap thresholds.
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Center for Advanced Transportation Education and ResearchUniversity of Nevada, Reno
Student PaperYue Zhao
381ft
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Model Construction
Data Collection• Typical TWSC intersection; Traffic and pedestrian volumes on each
approach during peak hour(4-5pm) were counted manually.
4:00-5:00 pm W 1ST STREET & Ralston Street
Traffic VolumeNBL NBT NBR SBL SBT SBR EBL EBT EBR WBL WBT WBR
56 23 44 78 59 12 93 120 77 112 99 43
PedestrianMA-WB MA-SB MI-NB MI-SB
18 8 12 22
4:00-5:00 pm W 1ST STREET & Bell Street
Traffic VolumeNBL NBT NBR SBL SBT SBR EBL EBT EBR WBL WBT WBR
22 23 32 56 22 66 78 106 34 120 145 98
PedestrianMA-WB MA-SB MI-NB MI-SB
15 21 6 5
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Center for Advanced Transportation Education and ResearchUniversity of Nevada, Reno
Student PaperYue Zhao
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Model Construction
Model Coding
• VISSIM: defines pedestrians as vehicles to extract gap acceptance etc. data.
• CORSIM(NETSIM & FRESIM): light, moderate, and heavy pedestrians.
Vehicle and pedestrian demands;
Basic geometric properties of the study intersections;
Pedestrian behavior attributes.
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Center for Advanced Transportation Education and ResearchUniversity of Nevada, Reno
Student PaperYue Zhao
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Model Construction
Model Calibration• Pedestrian and vehicle flows, speeds, travel time reflect those observed
data in the field.
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Center for Advanced Transportation Education and ResearchUniversity of Nevada, Reno
Student PaperYue Zhao
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Analysis
Delay Analysis• Pedestrian delay: relatively small
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Center for Advanced Transportation Education and ResearchUniversity of Nevada, Reno
Student PaperYue Zhao
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Accepted and Rejected Gap
Accepted gap: [4, 12]Rejected gap: [0, 5.5]Approximately 2 seconds overlap: [3, 5]
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Center for Advanced Transportation Education and ResearchUniversity of Nevada, Reno
Student PaperYue Zhao
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Analysis
Accepted Gap and Rejected Gap• Near-side and far-side accepted and rejected gap.
• Shorter far-side gaps are accepted in both models.• Near-gap and far-gap are recorded simultaneously when pedestrians
make the decision to cross.
• Potential dangerous behavior: some pedestrians pay little attention to the far-side incoming vehicles.
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Center for Advanced Transportation Education and ResearchUniversity of Nevada, Reno
Student PaperYue Zhao
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Analysis
Traffic and Pedestrian Volume
• Conflicting traffic volume increases larger gaps accepted.
• Pedestrian volume increases shorter gaps accepted.
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Center for Advanced Transportation Education and ResearchUniversity of Nevada, Reno
Student PaperYue Zhao
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Conclusions
Pedestrians are in the similar circumstances with vehicles on minor-street.
Pedestrian gap acceptance is from 4 to 12 seconds, and rejected gaps are around 0 to 5.5 seconds.
• Shorter far-side gaps are accepted.
• 2 seconds overlap between accepted and rejected gaps.
VISSIM provides more detailed coding platform and information.
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Center for Advanced Transportation Education and ResearchUniversity of Nevada, Reno
Student PaperYue Zhao
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