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Suggested Citation:"Conclusion." National Academies of Sciences, Engineering, and Medicine. 2018. Volume 2: TRAQS: A Combined Interface for Project-Level Air Quality Analysis. Washington, DC: The National Academies Press. doi: 10.17226/25229.
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Page 21
Page 22
Suggested Citation:"Conclusion." National Academies of Sciences, Engineering, and Medicine. 2018. Volume 2: TRAQS: A Combined Interface for Project-Level Air Quality Analysis. Washington, DC: The National Academies Press. doi: 10.17226/25229.
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Page 22

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NCHRP Project 25-48 21 With future releases of the TRAQS interface this decision could be revisited, provided that sufficient user demand exists to justify the effort and cost to implement these features. Other enhancements to the mapping capabilities could be implemented for the creation and editing of the dispersion modeling receptor grid and/or allowing the user to import aerial photography in lieu of the current default mapping layer. Future Enhancements to TRAQS The development of additional features may become necessary with changes in regulatory guidance and/or advances in modeling techniques. Additionally, future releases of the TRAQS interface could provide opportunities for including features that were deemed beyond the scope of this project or unrealistic for the project schedule. Conclusion The product of this work, TRAQS, is a user-friendly tool that combines disconnected models through a centralized GUI, supported by intuitive wizards providing context-sensitive help, and guides practitioners through the process of conducting or reviewing a Project-Level mobile emissions analysis. The TRACS interface fulfills the project objective to facilitate and simplify the process of Project-Level analysis while maintaining the richness of the underlying models. This work was guided by the input from both the NCHRP project panel and stakeholders in the field of mobile emissions analysis. As a result of this user outreach effort, the Project Team were able to advance software technical specifications and ensure that the completed interface is able to meet the analytical requirements set forth in regulatory guidance. Subsequently, it was vetted through rigorous review by these same stakeholders and found to satisfy the need for an integrated analytical tool that combines into one application a number of pre- and post- processing tools to support the input data requirements of each model type, including tools for migrating data from the model environment into reporting and mapping of model results. Implementation TRAQS could potentially have broad market appeal. More and more, transportation corridor planning and performance measurement involve an analysis of the air-quality implications of transportation improvement alternatives. A recent example is Guidance issued by the Council on Environmental Quality related to addressing GHG emissions and Climate Change impacts within NEPA reviews. Within this context, the market for a software tool that simplifies Project-Level air quality analyses could be as large as the combined markets of DOTs, MPOs, and air quality agencies. Key initiatives to advance implementation could include: 1. Develop a video tutorial to accompany the User’s Guide. 2. Develop a recorded webinar to introduce users to TRAQS. 3. Pilot test the software with state DOTs. 4. Conduct in-person training workshops. 5. Support ongoing maintenance, updates, and general technical support. 6. Host distribution of the TRAQS code and manage an online discussion forum.

NCHRP Project 25-48 22 References EMFAC2014 Volume II – Handbook for Project-level Analyses v1.07. April 30, 2014. California Air Resources Board. 40 CFR Part 51 Revision to the Guideline on Air Quality Models, Proposed Rule. July 29, 2015. Guideline for Modeling Carbon Monoxide from Roadway Intersections. EPA-454/R-92-005. November 1992. Using MOVES in Project-Level Carbon Monoxide Analyses. EPA-420-B-15-028. March 2015. MOVES2014a User Interface Reference Manual. EPA-420-B-15-094. November 2015. Transportation Conformity Guidance for Quantitative Hot-Spot Analyses in PM2.5 and PM10 Nonattainment and Maintenance Areas. EPA-420-B-15-084. November 2015. Appendices A-K Transportation Conformity Guidance for Quantitative Hot-Spot Analyses in PM2.5 and PM10 Nonattainment and Maintenance Areas. EPA-420-B-13-053. November 2013. Updated EPA-420-B-15-084, November 2015. Using MOVES for Estimating State and Local Inventories of On-Road Greenhouse Gas Emissions and Energy Consumption. EPA-420-B-16-059. June 2016.

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TRB's National Cooperative Highway Research Program (NCHRP) Web-Only Document 246: Volume 2: TRAQS: A Combined Interface for Project-Level Air Quality Analysis documents the development of TRAQS (TRansportation Air Quality System), a Graphical User Interface-based software application that simplifies project-level air quality analysis of mobile source emissions. TRAQS integrates the “modeling chain” components of traffic activity, mobile emissions, and air dispersion modeling.

TRAQS is designed to streamline the model process and minimize any limitations of standalone software packages by integrating individual models and databases into a user-friendly, intuitive Graphical User Interface. It provides access to advanced modeling tools and mapping features. Overall, TRAQS offers the capabilities necessary to complete a Project-Level air quality analysis with increased accuracy and efficiencies.

Download the open source software as well as NCHRP Web-Only Document 246: Volume 1: TRAQS Users Guide.

This software is offered as is, without warranty or promise of support of any kind either expressed or implied. Under no circumstance will the National Academy of Sciences or the Transportation Research Board (collectively "TRB") be liable for any loss or damage caused by the installation or operation of this product. TRB makes no representation or warranty of any kind, expressed or implied, in fact or in law, including without limitation, the warranty of merchantability or the warranty of fitness for a particular purpose, and shall not in any case be liable for any consequential or special damages.

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