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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
3
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
4
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
5
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
8
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
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
13
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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