TEXPACK - static.tti.tamu.eduTexas “Package” Suite of Travel Demand Modeling Software –Trip...
Transcript of TEXPACK - static.tti.tamu.eduTexas “Package” Suite of Travel Demand Modeling Software –Trip...
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TEXPACK Integrated Travel Demand Modeling
Application
Texas Planning Conference June 2016
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Presentation Overview
What is it and what is different? Why do this? What does it look like? Where are we now? Where are we going with this?
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What is TexPACK?
Texas “Package” Suite of Travel Demand Modeling Software –Trip generation and distribution techniques
–Integrated into TransCAD travel demand modeling platform
–Takes advantage of inherent GIS capabilities
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What is TexPACK?
No longer need to invoke sequential models one step-at-a-time –Although an end-user certainly still has that
option
Automates a number of steps –Application/model familiarity –Hopefully minimizes potential for errors –Reporting and mapping mechanisms
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What is TexPACK?
Continues with initiative to standardize: –Folder structures –File naming conventions –Attribute/data naming conventions –Model architecture
Common platform for interpreting results statewide
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Why Implement TexPACK?
1. Increase use of demand model applications by improving application interface,
2. Create a standard platform to create, apply and deploy models throughout the state,
3. Create a common system for measuring and communicating results, and
4. Create a system that permits flexibility for enhancement
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TexPACK: What Does It Look Like?
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Scenario Manager
Apply single stage
Apply all stage
Stage settings Stages
Version information
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TexPACK: What Does It Look Like?
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Scenario Setup
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TexPACK: What Does It Look Like?
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Scenario
Folder/Path
Steps
Scenario description
Modify Steps Input Files
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TexPACK: What Does It Look Like?
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Scenario
Folder/Path
Status
Input Files Description
Step
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TexPACK: What Does It Look Like?
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Scenario
Folder/Path
Status
Output Files Description
Step
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TexPACK: What Does It Look Like?
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Scenario
Value of Parameter
Parameter Description
Step
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TexPACK: What Does It Look Like?
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Toll/Generalized Cost
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TexPACK: What Does It Look Like?
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Reporting Feature
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TexPACK: What Does It Look Like?
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TexPACK: What Does it Look Like?
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Mapping Feature
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TexPACK: What Does It Look Like?
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TexPACK: What Does It Look Like?
Folder structure –All folders stored in C:\TxDOT\study area
•TxDOT requirement
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TexPACK: What Does It Look Like?
Attribute/data conventions –TxDOT requirement
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What Has Been Converted?
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Base and Forecast
Base and Forecast
Base and Forecast
Base and Forecast
Base and Forecast
Base and Forecast
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What Has Been Converted?
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Forecast Only
Base Only
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What Has Been Converted?
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Base and Forecast With
Interim Years
Base and Forecast With
Interim
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What Has Been Converted?
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Under Development
Under Development
Pending Conversion
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What Has Been Converted?
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Alternative System
Alternative System
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Deployment Pending?
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Needs to be scheduled
Needs to be scheduled
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Where are we going?
Version 1.1 –Has been or will be delivered
Version 1.2 “ish”
–Laredo 2008-2040 travel models •Generalized cost (account for tolls) •Multi-class assignment –Truck –Auto
•Utilizes bi-conjugate assignment technique •Delivered to MPO
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Where are we going?
Bi-Conjugate
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1.000E-05
2.100E-04
4.100E-04
6.100E-04
8.100E-04
1.010E-03
1.210E-03
0 200 400 600 800 1000 1200
Rela
tive
Gap
Number of Iterations
FW
BFW
Did not converge
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Where are we going?
Version 1.2 “ish” –Lower Rio Grande Valley 2009 Base Year with
2040 pending Forecast Application • Integer 100’th’s trip matrices (previously delivered) –X100 format
•Generalized cost MMA assignment technique –Truck and auto-only toll lane capability
•Bi-conjugate assignment technique •Time-of-day (TOD) models •This functionality has not been delivered to Valley MPOs yet
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Where are we going?
Version 2.0 (pending) –Envisioned as new approach to modeling in Texas
–Time-of-day models – No longer “daily” models
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Where are we going?
Version 2.0 (pending) –Generalized-cost MMA
•Truck and Auto trip tables •Capability to address truck and auto-only toll facilities
–Facility types for HOV, HOT, and toll lanes
–Capability to study alternative demographic scenarios for same year
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Where are we going?
Version 2.0 (pending) –Utilize TxDOT purchased INRIX speed/travel time data
–Iterative feedback resolution •No longer integer trip matrices
–Additional reporting mechanism(s)
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Where are we going?
Other enhancements under consideration –Generation of person trips rather than direct
generation of auto trips •Auto-occupancy models
–Preservation of trips by income category –Stronger accounting of truck/freight flows –Mode choice
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Where are we going?
TexPack has been tested in Version 7.0 –Results delivered to TxDOT-TPP
Examining flow-chart options
–So what is this?
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Where are we going?
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Where are we going?
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Team Management of
the TDM Development
and Application Process
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Questions?
TPP offers additional on-site assistance:
• Help Desk: 512-486-5177 or, • Email: TPP [email protected]
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THANK YOU