Florida Model Task Force

1
Treasure CoastSoutheast FloridaRegional
Planning Models

• In
• Cube Voyager

2
Consultant Teams

• TRCPM
• Corradino
• Renaissance Planning Group
• Cambridge Systematics

• SERPM 6
• Corradino
• AECOM Consult

• With thanks to
• FDOT Districts 4 6
• MPO staffs of Palm Beach County, Broward County,
  Miami-Dade County, Martin County, St. Lucie
  County and Indian River County
• SFRTA

3
TCRPM - History

• Earlier FSUTMS/Tranplan Versions 1 2
• TCRPM 3 Highway-only model developed and
  calibrated completely in TransCAD thought we
  were done!
• Model development switched to Cube Voyager after
  Model Task Force action in the fall of 2004.

4
2000 Treasure Coast Regional Planning Model
(TCRPM)

• Cube Voyager based model
• Covers three counties
• Indian River
• St. Lucie
• Martin
• Two Flavors
• Highway Only
• With Transit

5
TCRPM Whats New?

• Cube Voyager Platform
• Initial Speeds from Posted Speed and Traffic
  Signal Data on the network
• PT for a simple transit network
• Matrix for Mode Choice
• Highway Evaluation Connected to standard FSUTMS
  RMSE and HEVAL programs

6
TCRPM

• Uses FSUTMS Facility and Area type coding
• Trip generation rates are county specific
• Mode choice model
• Splits auto and transit trips
• Further splits auto trips in occupancy levels
• Run time for the full model is 7 min. on a 3.4
  GHZ machine
• Traffic Analysis Zones 731

7
TCRPM VMT/VHT (Volume/Count) Ratios
8
TCRPM RMSE
9
SERPM - History

• Earlier FSUTMS/Tranplan Versions 1 - 5
• SERPM 5 1999 Base Year with restructured mode
  choice responding to FTA concerns
• SERPM 6 is a Cube Voyager model, no Tranplan
  required. Custom-written Fortran code for LSGEN,
  Mode Choice and a few other minor components

10
SERPM 6

• Palm Beach, Broward and Miami-Dade Counties
• 4,134 TAZs (ZONESA)
• 3 Time periods (AM 630-930, PM 330 630,
  Off-peak)
• 10 Transit modes
• 22 28 hours run time on 3.4 GHZ computer

11
Whats New?

• Zdata in TAZ Shape file DBF
• 3 Period Time-of-day
• Dynamic area types
• Estimation of initial speeds from posted speed
  and signals
• Estimation of capacities from roadway physical
  characteristics
• Estimation of time delays at freeway merges
• Equilibration of speeds in peak period
  pre-assignment
• Trips for HHs with autos distributed using
  highway skims, while 0-auto HHs use transit skims

• Micro-coding of fixed-guideway transit stations
• Model is validated to observed highway speeds as
  well as to traffic counts
• Transit nets kept in PT, but Trnbuild used for
  paths, skims and assignment
• Non-motorized mode choice
• Built-in mode choice constant estimation process
• Better estimation of kiss-and-ride and
  park-and-ride at stations

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SERPM 6 Model Flow

1. Setup controls and file names
2. External EE by period
3. Trip Gen LSGEN by auto ownership and TOD
4. Highway Including speed and capacity
   calculators
5. Distribution Including equilibration of peak
   period highway speeds
6. Transit Nets PT ? Trnbuild and connectors,
   paths, skims and fares

1. Mode Choice
2. Transit Assignment by access path and TOD
3. Highway Trip Tables Combines trip tables for
   assignment
4. Highway Assignment by TOD (use most computer
   time)
5. Highway Evaluation HEVAL and RMSE by TOD and
   county

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SERPM 6 - Transit Nets
PT Mode (applicable county) TRNBUILD Mode (applicable county)
1 Walk Access Walk Access
2 Drive Access Drive Access
3 Sidewalk/Transfer connector Sidewalk/Transfer connector
4 Bus (Palm Beach Broward) Bus (Palm Beach)
5 Bus (Miami-Dade) Bus (Dade)
6 Express Bus (all) Express Bus (Broward)
7 Metro-Rail Metro-Rail
8 Tri-Rail Tri-Rail
9 Metromover Metromover
10 New Mode (all) New Mode (Broward)
11 Project Mode (all) Project Mode (all)
12 Tri-Rail Shuttle (all) Tri-Rail Shuttle (all)
13 Limited Stop Bus (all) Limited Stop Bus (Miami-Dade)
14 n/a Bus (Broward)
15 n/a Express Bus (Miami-Dade)
16 n/a Express Bus (Palm Beach)
17 n/a New Mode (Miami-Dade)
18 n/a Limited Stop Bus (Broward)
19 n/a Limited Stop Bus (Palm Beach)
20 n/a New Mode (Palm Beach)
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Station Micro-coding
Source AECOM Consult
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Time of Day

• FSUTMS uses auto speeds from 24-hour assignment
  as for HBW mode choice
• HBO NHB use free-flow speeds
• SERPM6 uses time of day
• Peak period trips use AM congested speeds
• Off-peak period trips use free-flow speeds
• Standard FSUTMS design expected for most models

Standard FSUTMS Models Standard FSUTMS Models
Purpose Period Auto Impedances
HBW all Congested
HBO all Free-flow
NHB all Free-flow
Time-of-day Models Time-of-day Models
Purpose Period Auto Impedances
HBW peak HBO peak NHB peak AM congested
HBW off-peak HBO off-peak NHB off-peak Free-flow
Source AECOM Consult
16
PT Overview

• Multi-path algorithm
• Can produce two or more paths per O/D pair
• Skims reflect weighted values of all paths
• Advanced fare system transit speed features
• Good network features
• Has ability to generate access connectors

Source AECOM Consult
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FTA Reactions to PT

• Strongly recommended micro-coding fixed-guideway,
  park-and-ride kiss-and-ride stations to better
  represent transfer time
• Existing FSUTMS standards utilize same node for
  rail bus stations
• Confirmed that multi-path builder is not
  compatible with existing FSUTMS mode choice
  structure
• PT v4.0 can not provide the necessary information
  for New Starts quality control tests
• Trying to quantify impacts of multi-path systems
  on New/Small Starts would prefer single-path but
  do not require it
• Helpful to have empirical evidence of typical
  New/Small Start situations in PT

Source AECOM Consult
18
FDOT Central Office Research

• Citilabs added a best-path switch in PT
• Addresses FTAs New Starts quality control tests
• Mimics single-path path-builders
• Developed and tested 3 prototype models
• (1)PT multi-path (2)PT best-path (3)PT-TRNBUILD
  hybrid
• Purposes
• Provide empirical data to assist with
  FTA/Citilabs discussions
• Help determine best design for PT model that
  produces explainable results that are sufficient
  for New/Small Starts analysis
• Identify any issues as early as possible
• Developed modeling standards (frameworks) for
  multi-path system, adjusted slightly for other 2
  systems

Source AECOM Consult
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SERPM 6 - TRNBUILD

• Could not wait for PT best path
• Single-path builder from TP available in
  Voyager
• Link-based, some similarities to Tranplans
  path-builder
• Well-known to FTA
• Reliable history that dates back to MINUTP
• Used nationwide
• Atlanta, Washington DC, Columbus OH, Northern NJ
• Can read Voyager highway networks directly
• Easy to convert PT network connectors
• Only being used in Florida for SERPM6
• Future development not supported by Citilabs

Source AECOM Consult
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SERPM 6 Mode Choice
Applied for Peak and Off-peak
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SERPM 6 Transit Assignment

• By TOD (AM, Off-peak)
• By Access Mode (Walk, Auto)
• By Transit Mode
• Bus
• Metrorail
• Tri-Rail
• New Mode

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SERPM 6 Highway Assignment

• By Time-of-Day
• AM Peak
• Off-Peak
• PM Peak
• Composite 24 Hours (add preceding)

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SERPM 6 Highway Evaluation

• SUMMARIES BY
• SERPM 6 Region by Time-of-Day
• Each County for 24 hours
• Trucks alone each County for 24 hours

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SERPM 6 - Validation

• Standard FSUTMS
• Plus Speed Validation
• Speed compromises made in favor of Volume/Count
• Good Volume/Count ratios
• Very good RMSE
• Good transit assignment results

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SERPM 6 Speed Validation
Average Weighted Speed (mph) Average Weighted Speed (mph) Average Weighted Speed (mph) Average Weighted Speed (mph) Average Weighted Speed (mph) Average Weighted Speed (mph) Average Weighted Speed (mph) Average Weighted Speed (mph)
Model Model Model Model Observed Observed Observed Observed
Facility Type Facility Type AM PM Off Peak All Periods AM PM Off Peak All Periods
Freeway - 11 45.41 45.47 48.81 46.44 46.84 54.15 52.25 50.58
Surface Streets - 41 29.86 27.45 31.67 30.13 24.69 23.60 26.62 25.25
HOV Lanes - 81 54.02 51.57   52.79 64.19 57.58 60.89
Toll Facility - 91 63.79 62.17 62.84 62.96 65.16 65.47 63.97 65.17
All Facilities All Facilities 41.00 43.94 37.87 40.88 39.97 46.75 35.41 40.48
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SERPM 6 Systemwide Comparison
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SERPM 6 RMSE Validation
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SERPM 6 Transit Ridership Validation
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• Thank you!