TREDIS is built with a modular framework that is designed to complement and work with other transportation planning software and analysis systems. The modular framework allows for two kinds of use. First, it allows for selective use of modules, so that the core economic development and business attraction elements of TREDIS can feed into other transportation and land use analysis systems. Second, it allows for alternative input sources, so that specialized sources of data on transportation conditions and economic flows can feed data into TREDIS.  Specific examples of integrated analysis software includes the following:

(1) Road System Analysis Models of all kinds can be used to generate inputs for TREDIS. Network-based models (such as EMME2 and TransCAD), as well as non-network models (such as HERS), have been used to provide travel demand and road system performance measures that are input into TREDIS. Examples include use of EMME2 with TREDIS for Vancouver, BC and Portland, OR, and use of TransCAD with TREDIS for Chicago, IL and Appalachian Corridors.

(2) Facility Management Database Models of all kinds can be used to generate inputs to TREDIS. Bridge management systems (such as PONTIS) and Pavement Management Systems (PMS) have been used to generate facility condition performance measures that are input to TREDIS. Examples include use of both PONTIS and PMS with TREDIS for studies of preservation investment impacts by Kansas DOT and Michigan DOT.

(3) Freight Analysis Systems can be used to generate freight and commodity flow data as inputs to TREDIS. Examples include use of the TranSearch with TREDIS for freight studies in Massachusetts and Wisconsin, and use of FAF with TREDIS for Appalachian Corridors.

(4) Public Transit Impact Analysis Tools of all kinds (including TransDec and spreadsheet models) can be used to generate public transit performance measures for TREDIS. Examples include use of TransDec with TREDIS in Ontario and spreadsheet based forecasts used with TREDIS for METRA and RTA in the Chicago area.

(5) Integrated Land Use Models of all kinds can be used in coordination with TREDIS. Typical application use TREDIS to generate business growth and attraction estimates that drive land use demand forecasts. In addition, integrated transportation and land use models generate estimates of change in travel patterns, which are then input to TREDIS. Examples include CURBA with TREDIS for the California High Speed Rail Authority, and TRANUS with TREDIS by Oregon DOT.

(6) Regional Economic Impact Models of all kinds can be used with TREDIS. The economic adjustment module allows for both direct data transfer and manual data integration with both dynamic forecasting economic models (REMI, CRIO-IMPLAN, Global Insight) and static input-output models (including RIMS and Canadian provincial models). Examples include use with external forecasting models by Maine DOT and Wisconsin DOT, and use with input-output models for British Columbia and Ontario.

(7) Geographic Information Systems can be used to generate access and travel distance inputs to TREDIS, and to display TREDIS output measures of spatial changes in employment and economic growth. TREDIS utilizes ESRI GIS data as a default but also includes spatial coordinates for key input and output data to facilitate use of alternative GIS systems.

(8) Aviation and Airport Information Systems can be used to generate air system performance measures (operations, enplanements, delay times) that are input to TREDIS, and also utilize TREDIS results for updating airport impact and prioritization measures.

(9) Broad-based Transportation Decision Support Tools can also be used with TREDIS. The primary application involves use of the TREDIS Business Attraction Module to estimates the broader economic impacts within statewide transportation analysis tools (such as HEAT or BEST).