What is Travel Demand Modeling?

• Method to project future traffic volumes and evaluate various future roadway and land use strategies
• Based on 4-Step modeling process originally developed for interstate planning in the 1950s
  
  • Trip Generation
  • Trip Distribution
  • Mode Split
  • Trip Assignment
• Looks at the total system and related effects
• Used by all major metropolitan areas and also as a state-wide model in many states (no current IL statewide model).

Why build a Travel Demand Modeling?

• Evaluate effectiveness of Future Projects
• Run "What if Scenarios"
• Improve Traffic Planning and Forecasting

• Collected Land Use Information
  • Housing (single family/multi-family)
  • Retail, Office, Industrial
  • Schools
• Collected Street Network Information
  • Counts
  • Lane Configurations
  • Traffic Control (Signals, stops, roundabouts)
• Developed Trip Generation/Distribution Rates
  • Developed traffic analysis zones (TAZ)
  • Business Survey
  • Census info including household median income
  • NCHRP 187 rates, ITE trip generation rates
• Collected future roadway projects
  • Current Region TIP and Long Range Plan
  • Current IDOT Plan
  • Cities Plans and future land use
• Collected future land use information
  • City interviews, known developments
    Regional and County Planning
  • Illinois State-wide population projections
• Developed future networks and future projections

Meetings
Schedule for TDM Committee and Activities
February 20, 2008
Agenda
Minutes
April 16, 2008
Agenda
Minutes
Handouts
June 18, 2008 - Canceled
August 20, 2008
Minutes
Presentation
Existing Conditions Document

Maps
1990 Travel Area Zones - Tri-County Area
1990 Travel Area Zones - Downtown Peoria
2008 Travel Area Zones - Tri-County Area
Existing Street Network
Existing Land Use
Tazewell County Calibrated

Definitions
TAZ - Travel Area Zone


Useful Links
Cube Software