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Downtown Vancouver Transportation and Emergency Management System (DVTEMS). PTV Vision User‘s Group Meeting. Karen Giese Kean Lew. Outline. Project Background Custom Interactions Model Demonstration. Project Background. What is DVTEMS?. Planning level travel demand model

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Presentation Transcript
slide1

Downtown Vancouver Transportation and Emergency Management System (DVTEMS)

PTV Vision User‘s Group Meeting

Karen Giese

Kean Lew

outline
Outline
  • Project Background
  • Custom Interactions
  • Model Demonstration
what is dvtems
What is DVTEMS?

Planning level travel demand model

Focus on pedestrian route choice

Based on the VISUM platform

Custom pedestrian & pedestrian-vehicle interactions

Communication through visual platform

Quantitative analysis

dynamic assignment
Dynamic Assignment

DVTEMS Uses Dynamic Assignment (DUE)

Key Benefits

  • Accounts for Capacity Constraints
  • Models Proper Interaction of Real Flows
  • Models Impacts of Short-Term Measures
  • Accounts for Special Event Temporal Characteristics
custom interactions
Custom Interactions
  • Two-way Pedestrian Capacity
      • Allows Pedestrians to Utilize Both Sidewalks Along Street
  • Vehicle-Pedestrian Interaction at Intersections
      • Uses Actual Crosswalk Flows from Assignment
  • Pedestrian Inundation
      • Pedestrians Encroach on Vehicle Space
      • Vehicle Capacity Decreased
      • User-defined Parameters
two way sidewalk capacity9

Capacity 1 = Capacity North Sidewalk + Capacity South Sidewalk

Capacity 2 = Capacity North Sidewalk + Capacity South Sidewalk

Two-Way Sidewalk Capacity

Iteration 1

two way sidewalk capacity10

Capacity 1 = Volume Westbound / Volume Both Dir * Two Way Capacity

Capacity 2 = Volume Eastbound / Volume Both Dir * Two Way Capacity

Two-Way Sidewalk Capacity

Until Converges

Iteration 2 onwards

pedestrian inundation
Pedestrian Inundation

Pedestrian Encroachment on Vehicle Lane(s)

  • Parameters to be User-Defined (On or Off):
      • Inundation Allowed (Global Setting)
      • Pedestrian Link Inverse Density Threshold for Inundation (Global Setting)
      • On-Street Parking Allowed (Link Setting)
      • Pedestrian Allowed On Road (Link Setting)
pedestrian inundation13
Pedestrian Inundation

Link Density < Inundation Threshold

Link Density > Inundation Threshold

Link Inverse Density > Inundation Threshold

pedestrian inundation14
Pedestrian Inundation

Link Inverse Density > Inundation Threshold

Capacity Required by Inundation

pedestrian inundation15

ped volume

Pedestrian Inundation

Link Inverse Density > Inundation Threshold

pedestrian inundation16
Pedestrian Inundation

Link Inverse Density > Inundation Threshold

Car Capacity = f (inundation capacity required)

output
Output
  • Volume by Time Interval and Mode
  • Pedestrian Density by Time Interval
  • Pedestrian Level of Service by Time Interval
  • Inundation Occurrence (Link Density > threshold and parameters allow for inundation)
  • Travel Times To/From Stadium by Mode
example scenario results volumes density los over time
Example Scenario Results: Volumes, Density, LOS Over Time

Event 1 Start: 19:00

Pre-Event 2 Start: 18:50

Event 2 Start: 21:00

18:45

example scenario results volumes density los over time19
Example Scenario Results: Volumes, Density, LOS Over Time

Event 1 End: 21:30

Event 2 End: 23:00

23:30

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www.ptvamerica.com

Questions and Discussion

Thank you for your attention.