Travel Demand Modeling 101 Part 1: Terminology

August 22nd, 2008

It occurred to me that many people likely do not understand all of the terminology of travel demand models.  Because of this, I felt the need to list many of them here. Read the rest of this post… »

Introduction to the Four Step Travel Demand Model

May 27th, 2008

The center of most travel demand models is the “Four Step Model”.  This model was created in the 1950s to determine the demand on roadways.  The four steps include:

  1. Trip Generation
  2. Trip Distribution
  3. Mode Choice
  4. Trip Assignment

Read the rest of this post… »