SHIFT Model Training: Scenario 3A ITTS Freight in the Southeast Conference 2017 Liza Amar February 15 th 2017
Overview SHIFT Model Scope Model Scenario Examples Coding the Scenario Running the Model Evaluating Results Wrap up & Questions 2
SHIFT Model Scope
SHIFT Model Scope Southern Highway Interactive Freight Traffic (SHIFT) Model Phases of Model Development Phase I (mid 2013) = Master Network and TAZ development Phase II (Jan 2016) = OD trip table and GUI development = SHIFT Model Phase III (October 2016) = Training scenarios Purpose of the SHIFT Model Common framework A consistent reporting tool GIS based and compatible with other planning databases Uses existing, available data Analyze movements on major freight corridors, regionally and/or nationally Not a replacement for existing modeling or state freight plans 4
SHIFT Model Scope Study Area National study area (minus Alaska and Hawaii) Focus on the 9 Institute for Trade and Transportation Studies member states Model Years Base Year 2014 Forecast Year 2040 E+C (85 E+C Projects) Trip purposes Auto Truck Temporal Characteristics Daily Average weekday 5
SHIFT Model Scope Data Sources National Highway Planning Network (NHPN) Highway Performance Monitoring System (HPMS) Freight Analysis Framework, version 3 (FAF3) State Data: Networks, AADT, E+C Projects Traveler Analysis Framework (TAF) 6
SHIFT Model Scope Model Flow Chart 7
Model Scenario Examples
Training Scenarios Scenario 1 (Georgia) I 75 Truck Only Lane Scenario 2 (Kentucky) Regional I 69 Project Scenario 3 (Louisiana) Flooding Events Scenario 4 (Arkansas) Bridge Closures New Madrid Event Scenario 5 (Missouri) I 70 Work Zone All scenarios are based on 2040 E+C Model 9
Scenario 3: Louisiana (Flooding Events) Scenario 3A: I 20 Scenario 3B: I 10 Scenario 3C: Both Change number of lanes to zero 10
Accessing the Model Model Package Delivered January 2016 Developed in TransCAD 6.0 release 2 build 9085 Interface contains Scenario Manager, Model Run, and Utilities Reference Model Documentation (User s Guide & Practice Scenarios) Installing the SHIFT Model Install directly under the C drive (e.g. C:\SHIFT_Model\ ). Sub folders: Interface resource files and the GUI files for the add in Master input files to create a model scenario Parameters parameters files to run the model 11
Coding the Scenario Scenario 3_A: I 20 Road Closure due to Flooding Event 1. Identify project and any model modifications 2. Create a new project list and code [Project ID] values Add row for Project ID=Scenario_3_A_1, RUCODE=3, FCLASS=1, LANES=0 Add row for Project ID=Scenario_3_A_2, RUCODE=1, FCLASS=1, LANES=0 Add row for Project ID=Scenario_3_A_3, RUCODE=2, FCLASS=1, LANES=0 3. Code [Project_ID1] in the master highway network Add Scenario_3_A_1 on link IDs = 65083 Add Scenario_3_A_2 on link IDs = 64649, 195811, 195527 Add Scenario_3_A_3 on link IDs = 62292 12
Coding the Scenario Scenario 3_A: I 20 Road Closure due to Flooding Event 4. Validation (connectivity/attribute checks) Check lanes, area type and functional class attributes of surrounding links 5. Add centroid connectors and updated attributes Add link from Node/TAZ 22119 to Node 85665 (US 79) Add link from Node/TAZ 22119 to Node 88540 (I 49) 6. Update link IDs in the Select Link query file Select Link Add Link Delete Link Join Links Split Links Reshape Link Attrs. Node Attrs. Master>SelectLink.qry I 20 (Link ID 195811) US 82 (Link ID 7839) I 10 (Link ID 65187) 13 *Edit Settings
Running the Model 1. Install the interface TransCAD 6.0 r2 build 9085 TransCAD>Tools>Add Ins SHIFT Model Interface 14
Running the Model 2. Create the Scenario Scenario Manager Add Scenario Load Scenario Verify File Paths Input files Parameter files Output files 15
Running the Model 3. Run the model Run Type Run by Step Single Model Run Multiple Model Run Load scenario (.scn) files 16
Running the Model Utilities Tables Validation Statistics Trip Purpose Statistics Assignment Statistics Demographics by State Utilities Maps Congestion Map Trip Purpose Flow Maps Validation Map Demographics Map 17
Evaluating Results Daily Volume Maps Volume Difference Maps 1. Join assignment results scenario 3A (Build) network Base (No Build) results 2. Create formula fields DIFF: Build No Build flows ABSDIFF: Abs(DIFF) COLOR: DIFF/ABSDIFF 3. Create themes Bandwidth on ABSDIFF Color Theme on COLOR Red = More volume Green = Less volume Grey = Min change 18
Evaluating Results Bandwidth Flow Maps Map>Scaled Symbol Theme>Choose flow field (Ex: [Tot_Truck_Flow]) Select Link Flow Maps Join network with output assignment (MMA_Link_Flow.bin) Map>Scaled Symbol Theme>Check Dual Fields box>choose flow field 19
Wrap up & Questions
21 Results Presented The SHIFT Model can provide: Daily volumes for Auto and Truck Daily volume percent difference Bandwidth flow maps Select link analysis The SHIFT Model is an appropriate tool for: Analysis of regional or national truck assignments City to City and State to State analysis Large corridor (interstate) planning, especially for rural areas Support statewide travel demand models (Through trips, validation checks, subarea analysis, etc.) The SHIFT Model is NOT an appropriate tool for: Replacing existing statewide or regional travel demand models Replacing existing freight tools or freight plans Use in toll modeling, urban area modeling, intersection and interchange analysis or mode choice analysis.
Questions? Liza R. Amar, AICP, EI CDM Smith 713 423 7421 AmarER@cdmsmith.com