Application of an activity based model for highway pricing studies in chicago
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Application of an Activity-Based Model for Highway Pricing Studies in Chicago. CMAP Region. Population: 10.5m 21 counties 2K TAZs 17K MAZs. Regional Comprehensive Plan. GO TO 2040, adopted in 2010 Notorious traffic congestion Pricing queries lead to ABM development. Why Pricing?.

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Application of an activity based model for highway pricing studies in chicago

Application of an Activity-Based Model for Highway Pricing Studies in Chicago

TPAC | Columbus, OH | May 2013


Cmap region
CMAP Region Studies in Chicago

Population: 10.5m

21 counties

2K TAZs

17K MAZs


Regional comprehensive plan
Regional Comprehensive Plan Studies in Chicago

GO TO 2040, adopted in 2010

Notorious traffic congestion

Pricing queries lead to ABM development


Why pricing
Why Pricing? Studies in Chicago

  • Theoretical

    • Turn external costs inward

  • Practical

    • Cannot build our way out of congestion



Why develop abm
Why Studies in ChicagoDevelop ABM?

  • Advanced Model Work Plan

    • Pricing ABM

    • Transit ABM

    • ABM-DTA Integration

  • Benefits

    • User segmentation

    • Continuous value of time


Integrated model system
Integrated Model System Studies in Chicago

  • CT-RAMP demand model

    • Coordinated Travel Regional Activity-based Modeling Platform

  • Highway Assignments & Skimming

    • Handles route choice for trucks, externals, & airport traffic


Distributed model system
Distributed Model System Studies in Chicago


Model flow
Model Flow Studies in Chicago

Model Re-estimated for CMAP Pricing ABM

Auto ownership model

Destination choice models

Time-of-day choice models

Mode choice models


Ct ramp person types
CT-RAMP Person Studies in ChicagoTypes


Ct ramp activity types
CT-RAMP Activity Studies in ChicagoTypes


Road pricing essentials
Road Pricing Essentials Studies in Chicago

  • Variation in Value of Time

    • ABM -continuous VOT distribution

    • EMME - discrete VOT classes (high & low)

  • Vehicle occupancy

    • ABM & EMME - 3 discrete classes

      • SOV, HOV2, HOV3+

  • Route type choice

    • ABM & EMME explicitly treat toll & non-toll users for each segment


Value of time
Value of Time Studies in Chicago

  • VOT by travel purpose & person type

  • Car occupancy accounts for cost sharing

    • VOT(HOV2) = 1.6 * max(individual VOT)

    • VOT(HOV3+) = 2.3 * max(individual VOT)

  • Static assignment & VOT


Example of vot distribution
Example of VOT Distribution Studies in Chicago


Emme macro
EMME Macro Studies in Chicago


Route type choice
Route Type Choice Studies in Chicago

  • Currently implemented as binary choice

    • Toll vs. non-toll

  • Explicit modeling of toll users at OD level

  • Accounts for toll bias

  • Allows for VOT variation/segmentation beyond 12 assignable classes


Assignable trip tables
Assignable Trip Tables Studies in Chicago

  • Total of 44

    • 12 for passenger auto (from ABM)

    • 8 for trucks (EMME route type choice model)

    • 12 for externals (EMME route type choice model)

    • 12 for airports (EMME route type choice model)


Initial demand segmentation
Initial Studies in ChicagoDemandSegmentation


Desired multi class assignment
Desired Multi-Class Studies in ChicagoAssignment


Multi class assignment
Multi-Class Studies in ChicagoAssignment


Projects
Projects Studies in Chicago

IL 53/120

  • New highways

    • IL 53/120

    • Elgin O’Hare West Bypass

  • Add lanes

    • I-90

    • I-290

    • I-55

I-90

EOWB

I-290

I-55


Setting toll rates
Setting Toll Rates Studies in Chicago

  • Current

    • Set to recover construction & operating costs

  • Congestion pricing

    • Set to achieve performance objectives

      • Maintain free flow speed

      • Maximize revenue

      • Maximize throughput


Setting toll rates1
Setting Toll Rates Studies in Chicago

  • Set toll based on modeled delay

  • Toll Rate = (Hrs of Delay * VOT per Hr) / Miles


Travel times am peak
Travel Times Studies in Chicago(AM Peak)

$0.00

$0.00

$1.30

$2.76

Minutes

$2.53

$3.41


Toll rate comparisons
Toll Rate Comparisons Studies in Chicago

Toll rate ($/mile)


Other findings
Other Findings Studies in Chicago

  • Mode Share

    • Small HOV increase & SOV decrease

  • Traffic Spillover

    • Arterials & General Purpose Lanes

      • Decreased congestion


Other cmap efforts
Other CMAP Efforts Studies in Chicago

  • Outreach

  • Further study


Questions? Studies in Chicago

Matt Stratton, [email protected]

Kermit Wies, [email protected]

Peter Vovsha, [email protected]

Ben Stabler, [email protected]


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