MESO & HYBRID MODELING IN

Transcription

1 MESO & HYBRID MODELING IN JONGSUN WON, P.E. I Slide 1

2 SOMETHING NEW WITH PTV NORTH AMERICA Portland, OR Arlington, VA I Slide 2

3 MULTIRESOLUTION MODELING COMPONENTS Macroscopic Modeling Regional Focus Mesoscopic Modeling Corridor Focus Microscopic Modeling Facility Focus I Slide 3

4 MULTIRESOLUTION MODELING COMPONENTS Macroscopic Modeling Mesoscopic Modeling Microscopic Modeling I Slide 4

5 MULTIRESOLUTION MODELING COMPONENTS Macroscopic Modeling Mesoscopic Modeling Microscopic Modeling I Slide 5

6 STARTING POINT Link Connector Structure Node Edge Structure Intersection Control Configuration Dynamic Traffic Assignment (DTA) Ready Network Zone Definition (Parking Lot) Trip Table / Trip Chain Utility Function Definition I Slide 6

7 STARTING POINT SHORT-CUT ANM Export I Slide 7

8 STARTING POINT SHORT-CUT I Slide 8

9 MICRO VS. MESO IN VISSIM 8 Micro Static Routing & Dynamic Assignment Meso Dynamic Assignment Only Time Step Based Event Based Car Following Model Simplified Car Following Model I Slide 9

10 MESO NODE STRUCTURE Node for Dynamic Assignment Decision Point (Merge, Diverge, Intersect) Edge of the Network I Slide 10

11 MESO NODE STRUCTURE Node for Dynamic Assignment Decision Point (Merge, Diverge, Intersect) Edge of the Network Capacity Change Intersection Control Edge of the Network Node for Mesoscopic Modeling I Slide 11

12 MESO NODE STRUCTURE Node for Dynamic Assignment Decision Point (Merge, Diverge, Intersect) Edge of the Network Meso Graph Automatically Generated by Vissim Capacity Change Intersection Control Edge of the Network Node for Mesoscopic Modeling I Slide 12

13 EVENT BASED Vehicle Entering / Exiting Network Vehicle Crossing Events Vehicle Entering Node Signalized or Unsignalized Meso / Micro Boundary Control Location I Slide 13

14 SIMPLIFIED CAR FOLLOWING MODEL Simplified Car Following Model (M. Mahut, 2000) x f t = min(x f t r + v r, x l t r + L) x f : Position of Following Vehicle r : Response Time x l : Position of Leading Vehicle v : Free-Flow Speed t : Time L : Effective Vehicle Length L Vehicle Length Stand Still Distance Reaction Time (s) I Slide 14

15 SIMPLIFIED CAR FOLLOWING MODEL Desired Speed for Each Vehicle Vehicle Based Speed Distribution Vehicle Class Reduced Speed Area / Desired Speed Decision Point v Meso Speed Model Desired Speed for Each Link Link Related Defined by Modeler No Variation I Slide 15

16 MESO NETWORK CAPACITY Turn Capacity 3,600 seconds Meso Follow-up Gap Time (Link) Signalized Fixed Time Control Assumption Unsignalized Critical Gap Time for Minor Movement I Slide 16

17 HYBRID MODELING Micro Meso Switch Microscopic Network Hybrid Mesoscopic Network Spatial Selection with Object Sections for Microscopic Area I Slide 17

18 HYBRID MODELING Micro Transition Meso I Slide 18

19 PERFORMANCE MEASURES Convergence Volume # of Stops Zone Relations Path Evaluation DTA Results Meso Results Networkwide Results Speed VMT Delay Travel Time Density Speed Volume Delay Travel Time I Slide 19

20 MORE NEW FEATURES Meso & Hybrid Modeling Scenario Manager User Defined Attribute (UDA) Overtaking in the Opposing Lane Dynamic Traffic Assignment (DTA) Extension I Slide 20

21 SCENARIO MANAGER Project Modification 1 Modification 2 Modification 3 Base Network Modification 4 I Slide 21

22 SCENARIO MANAGER Project Scenario 4 Modification 1 Modification 2 Scenario 2 Scenario 1 Modification 3 Base Network Scenario 3 Modification 4 I Slide 22

23 USER DEFINED ATTRIBUTE (UDA) Pre-defined Attributes Object Data User Defined Attributes Fomula I Slide 23

24 COMING SOON th PTV Vision Traffic UGM October 11-12, 2016 in Washington, DC I Slide 24