Illustrative case studies demonstrate the four primary ways that TREDIS can be used...

Different forms of economic impact analysis are typically required at each stage in the transportation planning and decision-making process: (1) public policy discussion, (2) vision and strategy planning, (3) project prioritization and selection, and (4) alternatives analysis (project refinement).  Economic impact analysis can be cost-effective and valuable when applied in a manner targeted to the applicable decision stage.

Read our white paper on effective use of economic impact analysis for different decision stages, and see how TREDIS has been applied at each stage by clicking on the case study links below.

1 - Public Policy & Public Information

American Public Transportation Association
Fort Worth, TX -  Fee Policy
Missouri Dept. of Economic Development
Portland, OR: Cost of Congestion

2 - Vision Plans and Programs for State/Regional Improvement

Appalachian Regional Commission - Highway Program
Chicago Metropolitan Agency for Planning - Long Range Plan
Maine DOT - Long Range Multimodal Plan
Northeast CanAm Connections - Vision Plan
Richland County, SC - Long Range Plan
Virginia DOT - Six Year Multimodal Plan

3 - Project Prioritization and Selection

Kansas DOT
North Carolina DOT
Wisconsin DOT
Pikes Peak Area COG

4 - Alternatives Analysis (Options for Proposed Enhancements)

(A) Highway Corridor Improvements
I-95 Corridor Coalition
Indiana DOT - I-70 Corridor
Ontario MTO Corridor Studies

(B) Transit and Commuter Rail Enhancements
Durham, Ontario
MassDOT - South Coast
Toronto MetroLinx

(C) Passenger & Freight Intercity Rail Services
California High Speed Rail Authority
Midwest High Speed Rail Association
Chicago Freight Railroad Acquisition
Wisconsin Short Line Freight Railroad

(D) Airport Expansion
*Vancouver International Airport
*Atlanta Hartsfield Airport

* denotes case study pending; report documents not yet public