Topics

• The Big Picture
• Model Input
• Model Development
• Model Application
  • Transportation Corridor Projects
  • Transportation Operational Studies
  • Transit Projects
    • Modes and Terminology
    • Network Coding
    • Forecasting New Modes
    • New Starts
    • Small Starts
    • Federal Railroad Administration Guidelines
    • Validation
      • Transit Service Representation Validation
      • Transit Path-Building Validation
      • Transit Assignment Validation
    • Reasonability and Sensitivity Testing
  • Metropolitan Transportation Plans
  • Statewide Transportation Plans
  • Interregional Travel
  • Large Transportation Investment Studies
  • Pricing Studies
  • Public Private Partnership Projects
  • Congestion Management
  • Multi-Modal Projects
  • Non-Motorized Projects
  • Project Prioritization
  • Emergency Evacuation
  • Energy and Fuel Consumption
  • Multiple Goal Optimization
  • Infrastructure Sizing
  • Freight
  • Land Use and Development Analysis
  • Transportation and Air Quality Conformity
  • Climate Change and Green House Gas
  • Other Policy Analysis

Transit Assignment Validation

 The validation of the transit assignment procedure is really a validation of the modeling process used to forecast transit ridership.  The transit network and transit path-building procedures should be validated as part of the model development procedures.  The trip distribution and mode choice model components should be validated as they are developed.  The transit assignment validation combines the output of mode choice model with the transit network and path-building procedures.  In effect, the transit assignment validation is similar to the transit path-building validation with the exception that modeled transit trip tables, rather than observed trip tables from an on-board survey, are used in the assignment and validation.

Other Resources

1. FTA New Starts Planning & Project Development – The Federal Transit Administration's guidance on New Starts project development.
2. Travel Model Improvement Program, Travel Model Improvement Program, Travel Model Validation and Reasonableness Checking Manual – Second Edition