TREDIS has an intuitive web-based interface that makes it quite easy for users to master. The User Manual walks new users through a typical study application, illustrated by screen shots. (It is backed by telephone and interactive web-based support if needed.) The User Manual is organized into four chapters, with contents as noted below.

1. Introduction to TREDIS: Objective, Overview of TREDIS Structure, Options for Using TREDIS’ Modular Design, Overview of a TREDIS Analysis
2. Getting Data Ready for TREDIS: Preparation Before Proceeding, Project Input Data, Definitions of Facility, Mode, and Trip Purpose, Scenario Input Data, Case Input Data
3. Using TREDIS Online: Log-in Page, Navigation Bar, Project Page, Scenario Page, Case Page
4. TREDIS Results: Reports Page, Direct Travel Impacts, Direct Travel Cost Savings by Industry, Direct Market Access Benefit by Industry, Summary of Direct Project Impact by Industry, Summary of Overall Economic Impact by Year, Benefit-Cost Analysis.