Use GIS-T to Synchronize Land and Infrastructure Development

Principle Investigator: Yingling Fan Humphrey Institute of Public Affairs

Co-Investigator: David Levinson and Chen-Fu Liao Department of Civil Engineering

Motivation

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How do we accommodate growth while maintaining the quality of life for the 2.6 million people who already live and work here?

Twin Cities Reality

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Time

Infrastructure

DemandSupply

Excess Capacity

Infrastructure Deficit

Excess capacity:•Resource wasted

Infrastructure deficit:•Economy braked•Quality of life degraded

The tool aims to remove lumps by synchronizing land and infrastructure development, regardless the situation.

Emerging Needs

• Decreased level of transportation funding

• Existing infrastructure deficit

• Projected regional growth

• Needs for land use and transportation integration and optimization

• Needs for scenario building & forward planning

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Legend

LSCM: Land supply and capacity monitoring

KBES: Knowledge-based expert systems

UF: A sustainable future urban form

TINA: Transportation infrastructure needs assessment

SONG/3: A module extending the System of Network Growth (SONG 2.0) model employed in the Beyond Business as Usual project.

Si: Plausible future scenarios of transportation improvements

Data Inputs

LSCM

Land Use KBES

Pop/Econ Forecasts

TINA

Infrastructure SONG/3

Geodatabase

S2(k) ... SI(k)

% error allowed

Si(k)-Si(k-1)

Si(k)<

NO

YES

k=k+1

Converged Land and Infrastructure Development

Scenarios (UF, S)i=1, …, I

UF (k)

S1(k)

Synchronize Land & Infrastructure Development

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Use GIS-T to Synchronize

• Data integrity• Predefined GIS operations• Proper topological representation• Spatial analysis/visualization

Future of GIS– Knowledge-based GIS– Web-based GIS– GIS integrated with optimization technique– Integrated urban land and transportation planning

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“Progress in GIS-T has not caught up with the growing spatial data availability.”

LSCMLand Supply and Capacity Monitoring

• A perpetual, event-driven system

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Land Supply and Market Database

Buildable Land Supply Inventory

Estimates of Development Capacity

Suitability Analysis

•Land parcels, •Service areas, •Zoning/plan designations, •Government jurisdictions, •Building permits, •Annexations, •Subdivisions, •Sales

•Vacant•Partially utilized•Underutilized

•Vacant land capacity•Infill capacity•Redevelopment capacity

Land Use KBESKnowledge-based expert system

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Estimates of Development Capacity

Pop/Econ Forecasts

Estimates of Space Requirements

Efficient Future Urban Form

Minimum Travel Growth

Scenario

Fuzzy Decision

Tree

Minimum Travel Approach

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),( **ii hyhx

),( 00ii hyhx

),( 00ii hyhx

Shopping Center

Home

Workplace

Children’sSchool

Gym Club• Household relocation

– Base upon existing and proposed urban form and transportation network Optimum

10

Residential Patterns

• Observed • Optimum

Use expansion weight; N=318,966 households

TINATransportation Infrastructure Needs Assessment

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Future Urban Form

Existing Transportation

Networks

Report onInfrastructure Deficit

Mobility & Accessibility Evaluation

Future Travel Demand

Travel Demand

Forecasting

•Multi-modal network layers•Traffic counts dataset•Travel time matrices•Travel behavior survey datasets

Infrastructure SONG/3System of Network Growth

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Report onInfrastructure Deficit

Hypothesized Planning & Policy Contexts

Future Transportation

Networks

Network Growth

Modeling

•Policy alternatives (e.g., capacity expansion vs. demand management), •budget constraints (e.g., tight vs. loose), •regional priorities (e.g., private transportation-oriented vs. mass transit-oriented), •expansion decision rules (e.g., structured vs. unstructured), •technology perspectives (e.g., ITS-driven vs. conventional options)

The Iterative Loop Control

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Legend

LSCM: Land supply and capacity monitoring

KBES: Knowledge-based expert systems

UF: A sustainable future urban form

TINA: Transportation infrastructure needs assessment

SONG/3: A module extending the System of Network Growth (SONG 2.0) model employed in the Beyond Business as Usual project.

Si: Plausible future scenarios of transportation improvements

Data Inputs

LSCM

Land Use KBES

Pop/Econ Forecasts

TINA

Infrastructure SONG/3

Geodatabase

S2(k) ... SI(k)

% error allowed

Si(k)-Si(k-1)

Si(k)<

NO

YES

k=k+1

Converged Land and Infrastructure Development

Scenarios (UF, S)i=1, …, I

UF (k)

S1(k)

• Converge land & Infrastructure scenarios

• Provide multiple optimized solutions

• Synchronize land and infrastructure development

Summary of Key Functions

• Quantify & evaluate infrastructure needs

• Identify locations of transportation improvement

• Identify locations of land development

• Improve accessibility, quality of life, property values

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Summary of Benefits

• Ensure a comprehensive set of strategies to be considered

• Future-oriented preventative solutions

• Protect the integrity of land use and transportation planning

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