Downtown Vancouver Transportation and Emergency Management System (DVTEMS)

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Downtown Vancouver Transportation and Emergency
Management System (DVTEMS)
PTV Vision Users Group Meeting
Karen Giese Kean Lew
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Outline

• Project Background
• Custom Interactions
• Model Demonstration

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Project Background
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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

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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

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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

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Two-Way Sidewalk Capacity
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Two-Way Sidewalk Capacity
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Two-Way Sidewalk Capacity
Iteration 1
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Two-Way Sidewalk Capacity
Until Converges
Iteration 2 onwards
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Vehicle-Pedestrian Interaction at Intersections
Car Turn Capacity f (ped volume)
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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)

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Pedestrian Inundation
Link Density lt Inundation Threshold
Link Density gt Inundation Threshold
Link Inverse Density gt Inundation Threshold
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Pedestrian Inundation

• Link Inverse Density gt Inundation Threshold

Capacity Required by Inundation
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Pedestrian Inundation

• Link Inverse Density gt Inundation Threshold

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Pedestrian Inundation

• Link Inverse Density gt Inundation Threshold

Car Capacity f (inundation capacity required)
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Output

• Volume by Time Interval and Mode
• Pedestrian Density by Time Interval
• Pedestrian Level of Service by Time Interval
• Inundation Occurrence (Link Density gt threshold
  and parameters allow for inundation)
• Travel Times To/From Stadium by Mode

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Example Scenario Results Volumes, Density, LOS
Over Time
Event 1 Start 1900 Pre-Event 2
Start 1850 Event 2 Start 2100
1845
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Example Scenario Results Volumes, Density, LOS
Over Time
Event 1 End 2130 Event 2 End 2300
2330
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Example Scenario Results Link Closure
1915
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Questions and Discussion
Thank you for your attention.