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Published byJoanna Willis Modified over 8 years ago
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Version 5 Hands-On January 21, 2011 David Roden – AECOM
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Topics Three case study datasets Batch and configuration files Network conversion Demand conversion Router Plan processing Microsimulator Feedback Boost threads 1/21/2011 Chicago RTSTEP TRANSIMS Model 2
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Case Study Datasets Network NameNodesLinksZonesTrips Case1151354,600 TestNet72733025,410 Alexandria2,5723,60685378,810 1/21/2011 Chicago RTSTEP TRANSIMS Model 3
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Batch Files Start with Case1\control directory Open the RunAll.bat with a text editor Right click Edit Set paths to e xecutable programs and the configuration file Open the Config.txt file with a text editor to review or edit the configuration file 1/21/2011 Chicago RTSTEP TRANSIMS Model 4
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Configuration Files A configuration file can set global control keys –Set TRANSIMS_CONFIG_FILE=… Program control keys override configuration keys 1/21/2011 Chicago RTSTEP TRANSIMS Model 5 PROJECT_DIRECTORY../ DEFAULT_FILE_FORMATTAB_DELIMITED TIME_OF_DAY_FORMATHOUR_CLOCK MODEL_START_TIME 0:00 MODEL_END_TIME 27:00 UNITS_OF_MEASUREENGLISH NUMBER_OF_THREADS4 NOTES_AND_NAME_FIELDS TRUE
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Network Conversion NetPrep –Reformat network link and node data TransimsNet –Apply warrants/rules to synthesize TRANSIMS network details –Pocket lanes, lane connectivity, activity locations, parking lots, access links, lane use, turn prohibitions, and signal and sign warrants IntControl –Synthesize traffic controls from signal and sign warrants –Signal timing and phasing plans, detectors and phase offsets 1/21/2011 Chicago RTSTEP TRANSIMS Model 6
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Conversion Process 1/21/2011 Chicago RTSTEP TRANSIMS Model 7 TransimsNet Synthetic Network ArcNet Network Shapefile Control Warrants IntControl Traffic Controls NetPrep Conversion Script Input_Link Input_Node Input_Zone Link/Node/Zone
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Review Control Files Go to the control folder and open –NetPrep.ctl –TransimsNet.ctl –IntControl.ctl –ArcNet.ctl Look for the input/output files and the program parameters Review the inputs\NetPrep_Script.txt 1/21/2011 Chicago RTSTEP TRANSIMS Model 8
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Demand Conversion Process distributes aggregate trip table data to individual travelers at specific locations and trip start times –Zones activity locations within the zone –Daily/time period second of the day Trip purpose and orientation used to allocate trips to activity locations and set travel schedules –Activity location distribution weights by trip type –Diurnal distribution curves by trip type 1/21/2011 Chicago RTSTEP TRANSIMS Model 9
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Demand Conversion Process 1/21/2011 Chicago RTSTEP TRANSIMS Model 10 Location data Zone Data Location File Conversion Script Convert Trips Trip Tables Diurnal Distributions Activity Location Trip File HouseholdFile Vehicle File
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Review Demand Inputs Go to the input folder and open –Auto_Trips.txt –Transit_Trips.txt –HBW_PA.txt (Diurnal information) –Vehicle_Type.txt –LocationData_Script.txt Go to the control folder and open –LocationData.ctl –ConverTrips.ctl Look for the input/output files and the program parameters 1/21/2011 Chicago RTSTEP TRANSIMS Model 11
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Demand Conversion 1/21/2011 Chicago RTSTEP TRANSIMS Model 12 Converting the traditional zone based demand database to the activity based demand database
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Router Create partitions using “RandomSelect” –Divides travelers to randomly selected partitions Build paths for all the trips using “Router” –Paths built with Free Flow Speeds or an input link delay file Go to the control folder and open –RandomSelect.ctl –Router.ctl Look for the input/output files and the program parameters 1/21/2011 Chicago RTSTEP TRANSIMS Model 13
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Router Process 1/21/2011 Chicago RTSTEP TRANSIMS Model 14 Router Link Node Connection New Plans (Travel Paths) New LinkDelay File Selection File Random Select Trip File Pocket Parking Location Plans Link Delay File Trip File Vehicle File Vehicle Type File New Problem File
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Plan Processing Preparing the plans file to be read by Microsimulator –Plans are sorted based on their starting time Go to the control folder and open –PlanPrep.ctl Look for the input/output files and the Plan_Sort_Type key 1/21/2011 Chicago RTSTEP TRANSIMS Model 15 PlanPrep Sorted Plans New Plans
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Microsimulator A cell-based simulator that moves vehicles between link-lane-cells on a second-by-second basis –Cell length are equal to the length of the smallest vehicle in the Vehicle_Type file Trucks occupy multiple cells –Includes traffic signals and stop signs, reaction time, required and discretionary lane changing, random slow downs, permissive merge probabilities, vehicle loading and parking, plan following, bus stop interactions, etc. –Actual travel time of each trip is calculated 1/21/2011 Chicago RTSTEP TRANSIMS Model 16
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Microsimulator Process 1/21/2011 Chicago RTSTEP TRANSIMS Model 17 Microsimulator New Performance File (s) New LinkDelay File (s) Sorted Plans Vehicle File New Problem File Network SignFile New Sanpshot File (s) New Occupancy File (s) New Turn Volume File (s) Vehicle Type File
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Microsimulator Output 1/20/2011 Chicago RTSTEP TRANSIMS Model 18 Auto Truck
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Feedback – Router Stabilization 1/21/2011 Chicago RTSTEP TRANSIMS Model 19 PlanPrep Microsimulator Router New Link Delay LinkDelay PlanSelect Selected Plans Travel Plans Sorted Plans Travel Times Change ? Stop No Yes
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