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Transportation Network Management with Multiple Network
Types
Bhargava SanaDan Tischler
SAN FRANCISCO COUNTY TRANSPORTATION AUTHORITYMay 2, 2016
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Network WranglerStatic Network Management Tool
Python-based toolkit
Code transportation projectsHighway (add facilities, lanes
etc.)
Transit (new routes, headways etc.)
Apply projects to TDM networkGit version control
Conflict and error checking
Create static networks for TDMSimple to generate inputs for any
number of scenarios
Network files in Cube format
2
Network Wrangler
Build ProjectsBase TDM Network
Build/Future TDM Network
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Dynamic Traffic Assignment (DTA)Network Conversion
3
Dynamic vs. Static Network DifferencesAccurate roadway geometry
and link length
Signal timing plans
Intersection movements
Centroid connectors to mid-block nodes
Traffic flow parameters
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DTA AnywayDynamic Network Management Tool
Fix using DTA software (Dynameq)Signal import errors
Add turn pockets
Complex intersection movements (not handled by heuristics)
4
Base Static TDM Network
DTA Anyway
Traffic Signals
Stop Signs
Road Shapes (GIS)
Converted DTA Network
Clean DTA Network
Manual Checking and Error
Fixing
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Network Management – Status Quo
5
Base TDM Network
Build Project(s)
DTA Anyway
Base DTA Network
Future Static Network
DTA Anyway
Future DTA Network
Network Wrangler
Signals & Stops
Manual Checking & Error Fixing
Clean DTA Network
Manual Coding of Build TDM
Projects
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Solution Approaches
DTA to static network conversionDynameq -> EMME, TransModeler
-> TransCAD, etc.
Multi-resolution modeling (Aimsun, DynusT etc.)
Analysis, Modeling, and Simulation (AMS) Data Hub/ NeXTAStore
common data across multiple resolutions
Define a open-source multi-resolution network standardShould
enable extraction of both static and DTA networks 6
Base Master Network
TDM/Static Network
DTA Network
Build Master Network
TDM/Static Network
DTA Network
Network Wrangler++
Network Extractor
Network Extractor
TDM/DTA Projects
