Technical and User Documentation
The following technical documentation is available to assist in learning about and using TREDIS.
| User Guides | ||
| TREDIS Quick Start | Get up and running using TREDIS with the Quick Start. | |
| TREDIS 6.0 User Manual | Detailed user manual explaining how to use TREDIS and to get the most out of this powerful economic impact analysis system. | |
| TREDIS Input Data Requirements |
Input Data requirements and suggested sources for standard TREDIS. | |
| Data Sources and Default Values |
Indicates where TREDIS uses default variables, and provides sources and reference information |
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| Technical Documentation | ||
| Benefit Cost Module * |
Technical overview of the Benefits Cost module, including underlying economic theory. | |
| Dynamic Regional Economic Simulation Model * |
Details on the functionality of the Dynamic Regional Economic Simulation Model including underlying economic theory. | |
| Equity Module |
Provides demographics statistics for identifying less advantaged or vulnerable populations. | |
| Market Access Module * |
Explanation of the Market Access Module functionality. | |
| Travel Cost Module * |
Overview and description of how the Travel Cost Module within TREDIS operates. | |
| Other Information | ||
| TREDIS Privacy Policy | ||
| TREDIS Version and Data Retention Policy | ||
| Grant Reviewer Account User Manual | User manual for Grant Reviewers evaluating aaplications using TREDIS. | |
| Subscription Terms and Conditions | Updated document that covers permitted use and limitation of liability | |
| Release Notes | ||
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This release introduces upstream carbon dioxide emissions estimates for all fuel types supported by TREDIS |
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This release introduces county-specific default values for damage factors applied to pollutant emissions |
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TREDIS now incorporates the impact traffic congestion has on emission rates of local pollutants |
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Since April, there have been a number of continued bug fixes and maintenance updates |
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Addresses bug fixes and maintenance updates, including updates to Intercity Access module. |
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| 2026-02 Summary Results Enhancement | Enhances the Multi-Run & Summary Results feature with expanded economic impact breakdown fields and additional documentation in the export spreadsheet. | |
| 2026-02 Multiple Results Export | Introduces the ability to export multiple TREDIS reports into a single Excel workbook for one or more projects using reusable templates. Users can customize report selections and settings. | |
| 2026-02 Reliability Options | Adds new reliability entry options, allowing users to enter Total Buffer Hours or Buffer Time Index (BTI) in addition to Buffer Hours per Trip. | |
| 2026-02 Reset Emissions Costs | Corrects the default 2023 emissions cost schedule and adds a Reset to Default feature for existing projects. | |
| 2026-02 Bug Fixes | Addresses several bug fixes and maintenance updates. | |
| 2024-12 A User Preferences Import/Export | A new tab, User Preferences, records the state of the User Preferences that are expected to be used with the TREDIS projects defined in the Import Spreadsheet. | |
| 2024-12 B Store Region Definition | A new tab, User Preferences, records the state of the User Preferences that are expected to be used with the TREDIS projects defined in the Import Spreadsheet. | |
| 2024-06 A Societal Costs Travel | Societal Benefits and Costs can now be differentiated for each alternative, region, and year, and induced calculations now take better advantage of available data on mode costs. | |
| 2024-05 A Induced Calculations | Induced calculations can be done for new modes and induced benefit can be calculated for same. | |
| 2024-05 B Template Update | Import-export template has been updated with several tabs and documentation. | |
| 2024-05 C Interpolation and Expansion | Contingent Development and Commodity Mix can now be interpolated from user-data. | |
| 2023-11 A Equity Reports | Additional Benefit/Impact Distribution reports have been added to the Equity suite | |
| 2023-11 B Multi-Criteria Compare | Multi-Criteria Compare feature allows you to prioritize multiple projects evaluated in TREDIS at once based on weighting competing priorities | |
| 2023-11 C Safety Count Inputs | Addition of two new TREDIS interfaces that allow users to enter counts of fatalities, injuries and crashes | |
| 2023-11 D Safety Impacts EIA | Added functionality to use the impacts of averted crash outcomes – fatalities, injuries, and property damage | |
| 2023-11 E Unit Costs | New additional Costs input interface forcalculating total capital costs based on input quantities and unit costs for common categories of infrastructure spending | |
| 2023-11 F Reports | New reports to aid input validation and results tracing and to analyze the benefits of investment alternatives at a per-trip level | |
| 2023-11 G Import Spreadsheet Update | Version 6.02 of Import Spreadsheet Available | |
| Prior Years Data Sources and Default Values | ||
| Default Values year 2023 | ||
| Default Values year 2022 | ||
| Default Values year 2021 | ||
| Default Values year 2020 | ||
| Default Values year 2019 | ||
* Descriptions of each of the modules can be found on the Inside TREDIS page of this website.
Information & Sales
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Technical Support
TREDIS Software Group
Division of EBP US, Inc.
155 Federal Street
Suite 600
Boston, MA 02110 USA
