| Subtask 3.1 Air Quality Implications and Assessment Needs for Texas DOT in the Context of Transportation Electrification | This report provides the Texas Department of Transportation (TxDOT) and the Technical Working Group for … | 2022/08/01 | Download |
| Subtask 3.1 Addressing Dallas Fort Worth VOC-limited and transitional areas in Designated NOx-limited Regions of Ozone Nonattainment | This report provides the Texas Department of Transportation (TxDOT) and the Technical Working Group for … | 2022/08/01 | Download |
| Subtask 3.3 Framework and Best Practices for Developing a Climate Action Plan | This report provides the Texas Department of Transportation (TxDOT) and the Technical Working Group for … | 2022/08/01 | Download |
| Subtask 2.1 TWG Technical Issues Analysis: Emissions, Air Quality and Health in Transportation Planning | This report provides the Texas Department of Transportation (TxDOT) and the Technical Working Group for … | 2021/09/30 | Download |
| Scenario Planning for COVID-19 and Other Uncertainties – Implications for Transportation and Air Quality Planning | In a study of potential COVID-19 impacts on air quality and transportation planning conducted in … | 2021/07/31 | Download |
| Emissions Inventory and Conformity Data Primer | The aim of this document is to provide Texas’ transportation practitioners with an overview of … | 2021/07/30 | Download |
| MOVES3 Technical Review | This report summarizes the major updates in MOVES3 compared to the MOVES versions that are … | 2021/03/31 | Download |
| Use of Sketch Planning Tools in Transportation and Air Quality Planning (2020) | This document summarizes findings of the task focused on clarifying the use of sketch planning … | 2020/08/31 | Download |
| Addressing New Technologies and Data in Transportation Conformity: Pilot Study (2020) | This report summarizes a case study analysis for a Texas non-attainment area, conducted as part of the TTI-TxDOT Air … | 2020/08/31 | Download |
| Comparison of MOSERS Spreadsheet Tool and FHWA’s CMAQ Toolkit (2020) | This memorandum summarizes the findings of a high-level comparison of TxDOT’s MOSERS spreadsheet tool with … | 2020/08/31 | Download |
| Emissions and Air Quality Impacts of the COVID-19 Pandemic (2020) | This study, conducted as part of Subtask 2.1 (TWG Technical Issues Analysis) under the TTI-TxDOT … | 2020/08/31 | Download |
| Performance Measures and Tools for Assessing CMAQ Project Effectiveness (2020) | This report summarizes the activity on “Performance Measures and Tools for Assessing CMAQ Project Effectiveness” conducted … | 2020/08/31 | Download |
| Addressing New Technologies and Data in Transportation Conformity: Overview and Assessment (2020) | The aim of this task is to provide a forward-looking assessment of how transportation conformity analyses can potentially incorporate new … | 2020/08/31 | Download |
| Use of Sketch Planning Tools in Transportation and Air Quality Planning (2020) | This document summarizes findings of the task focused on clarifying the use of sketch planning … | 2020/08/31 | Download |
| Overview Comparison of MOSERS Spreadsheet Tool and FHWA’s CMAQ Toolkit (2020) | This memorandum summarizes the findings of a high-level comparison of TxDOT’s MOSERS spreadsheet tool with … | 2020/06/03 | Download |
| Use of Sketch Planning Tools in Transportation and Air Quality Planning (2020) | In transportation planning, sketch planning tools and methods are those that provide a general order-of-magnitude … | 2020/04/06 | Download |
| 1.1 Maintain, Update and Enhance Traffic Activity Estimation and Forecasting Methods: Registration Data Update and Plan (2019) | This report provides a summary of the efforts to maintain, update and enhance the traffic … | 2019/10/30 | Download |
| 1.2 Maintain, Update and Enhance Traffic Activity Estimation and Forecasting Methods: Registration Data Update and Plan (2019) | This report provides a summary of the efforts to maintain, update and enhance the traffic … | 2019/10/30 | Download |
| Technological Advancements in Transportation and Implications for Air Quality and Conformity (2019) | This report provides a summary of the technological advancements in transportation and implications for air … | 2019/10/30 | Download |
| Evaluation of TxDOT’s Non-Road Fleet Activity Data for Air Quality Applications (2019) | This memorandum summarizes work performed by TTI staff on evaluating TxDOT’s non-road fleet activity data … | 2019/10/30 | Download |
| Summary of the Texas Volkswagen Environmental Mitigation Plan (2019) | This report provides a summary of the Texas Volkswagen Environmental Mitigation Plan developed by TCEQ. … | 2019/10/30 | Download |
| Development of Harris County MOVES Emissions Factors for Diesel School Buses by Model Year (2019) | The goal of this task is to develop school bus emissions factors by model year … | 2019/10/30 | Download |
| TxDOT Non-Road Fleet Data (2018) | This memorandum summarizes work performed by TTI staff on evaluating TxDOT’s non-road fleet activity data … | 2018/10/30 | Download |
| Funding Opportunities for Air Quality Improvement Projects (2018) | This memorandum provides a brief summary of work performed under the investigation into funding opportunities … | 2018/10/30 | Download |
| Activity Forecasting (2018) | This memorandum summarizes work performed by TTI staff on activity forecasting. For this purpose, TTI … | 2018/10/30 | Download |
| Resilience Applied to Transportation Policy and Planning (2017) | This document describes an approach to adopting the concept of ‘resilience’ to the transportation sector. … | 2017/10/30 | Download |
| Emerging Air Quality Issues Analysis – Emerging Data and Applications for Transportation Air Quality Analysis (2017) | Advancements in data science and data visualization have impacted the transportation sector significantly in recent … | 2017/10/30 | Download |
| Resilience Thinking Workshop (2017) | This report describes a workshop designed to promote resilience thinking amongst transportation professionals. The report … | 2017/10/30 | Download |
| Collection and Analysis of Heavy Duty Drayage Activity Data (2017) | This memorandum summarizes the developments in Fiscal Year (FY) 2017 of the collection and analysis … | 2017/10/30 | Download |
| Maintaining Project Consistency with Transportation Plans with an Emphasis on Maintaining Air Quality Conformity (2016) | The researchers found that the main challenges leading to project inconsistencies are insufficient communication over … | 2016/10/30 | Download |
| Investigation of Funding Sources for Texas Transportation Air Quality Improvement Projects (2015) | This report summarizes findings from Subtask 2.1 (Technical Working Group [TWG] Air Quality [AQ] Planning … | 2015/10/30 | Download |
| Air Quality Performance Measures – Investigating the Use of STARS II in Mobile Source Air Quality Modeling (2015) | This memorandum summarizes work performed by Texas A&M Transportation Institute (TTI) staff in Fiscal Year … | 2015/10/30 | Download |
| Air Quality Performance Measures Investigating the Use of STARS II in Mobile Source Air Quality Modeling (2015) | This memorandum summarizes work performed by Texas A&M Transportation Institute (TTI) staff in Fiscal Year … | 2015/10/30 | Download |
| Air Quality Issues Related to Alternative Modes and Fuels – Emissions and Air Quality Impacts of Connected and Automated Vehicle Technology (2015) | Air Quality Issues Related to Alternative Modes and Fuels – Emissions and Air Quality Impacts … | 2015/10/30 | Download |
| Investigation of Funding Sources for Texas Transportation Air Quality Improvement Projects (2015) | This report summarizes findings from the Air Quality and Conformity Inter-Agency Contract (IAC), Subtask 2.1 … | 2015/10/30 | Download |
| Texas-Specific Drive Cycles and Idle Emissions Rates for Using with EPA’s MOVES Model (2014) | This project addresses the gaps of information and data in the MOVES model in regards … | 2014/10/30 | Download |
| Air Quality Impacts of Freight Sector Innovations (2014) | This report focuses on the future of freight and implications for air quality. The purpose … | 2014/10/30 | Download |
| Incorporating Greenhouse Gas (GHG) Emissions in Long Range Transportation Planning (2014) | This research created a framework and developed guidance to incorporate a mitigation strategy, to reduce … | 2014/10/30 | Download |
| State-of-Practice in the Application and Quantification of Benefits of TCMs in the US (2014) | State and local transportation agencies have a long history of implementing strategies to reduce air … | 2014/10/30 | Download |
| Accounting for Electric Vehicles in Air Quality Conformity (2014) | The main goal of this study was to understand EVs impact on mobile source emissions … | 2014/10/30 | Download |
| Addressing Emission-Related Health Issues in Transportation Planning (2014) | There is growing support at the state, federal, and local level for health considerations in … | 2014/10/30 | Download |
| A Framework to Characterize Air Quality Impacts of Transportation Activities due to Shale Oil and Gas Extraction (2014) | The aim of this report is to provide a general framework and a systematic approach … | 2014/10/30 | Download |
| State-of-Practice Review: Project Level Traffic Forecasting/Corridor Analysis (2013) | This report summarizes the state-of-the-practice in project level traffic forecasting in Texas and nine peer … | 2013/10/30 | Download |
| Procedures for Developing MOVES-Based Paved Roads Particulate Matter Emissions Inventories (2013) | The purpose of the study was to provide a procedure of using MOVSutl designed for … | 2013/10/30 | Download |
| Developing a Framework for Applying Off-Model Emissions Reduction Strategies (2013) | This report summarizes work performed in Fiscal Year 2013 (FY2013) on Subtask 2.9 (Developing a … | 2013/10/30 | Download |
| Eco-Driving as an Emissions Reduction Strategy (2013) | Eco-driving is regarded as an important strategy to reduce emissions and fuel consumption in a … | 2013/10/30 | Download |
| Emissions Implications of Plug-In Electric Vehicle (2013) | The objective of this task is to provide the Texas Department of Transportation (TxDOT) with … | 2013/10/30 | Download |
| Linking Long-Range Transportation Planning with Project Planning in Support of the Environmental Review Process (2013) | Since the establishment of the National Environmental Policy Act (NEPA), sponsors of transportation projects receiving … | 2013/10/30 | Download |
| Heavy-Duty Diesel Vehicle Idle Reduction Policies (2012) | The purpose of this report is to provide the Texas Department of Transportation (TxDOT) with … | 2012/10/30 | Download |
| Characterization of Exhaust Emissions from Heavy Duty Diesel Vehicles in the HGB Area (2012) | This technical report discusses the development and study of emission characteristics from a variety of … | 2012/10/30 | Download |
| Traffic and Air Impacts of Natural Gas Drilling (2012) | Technological advances in drilling methods and techniques have allowed for the extraction of natural gas … | 2012/10/30 | Download |
| Investigation of Diesel Inspection and Maintenance Program (I/M) in the DFW Area (2011) | The purpose of this report is to provide the TxDOT with an overview of the … | 2011/10/30 | Download |
| Report Summary Estimation of Emissions from Hybrid and Plug-In Hybrid Vehicles (2011) | There are two main objectives for this 2010 task: To provide TxDOT with a better … | 2011/10/30 | Download |
| Employer-Based Emissions Reduction Programs (2011) | The programs are grouped in the report based on their scope (employer-based or technology-oriented) and … | 2011/10/30 | Download |
| Compendium of Greenhouse Gas Control Strategies (2011) | There is scientific evidence that greenhouse gas (GHG) emissions deteriorate air quality, contribute to human … | 2011/10/30 | Download |
| Connectivity Impacts: Emissions Impacts of Connectivity (2011) | The goal of this 2011 task was to study air quality impacts of inter-modal freight … | 2011/10/30 | Download |
| TWG Air Quality Planning Technical Analysis – Analysis Methodology Overview for Donut and Isolated Rural Nonattainment Areas (2011) | This 2011 report provides an overview of methods used in Texas and elsewhere, specifically for … | 2011/10/30 | Download |
| New Directions in Greenhouse Gas Emissions and Climate Change (2010) | The purpose of this white paper is to clarify the current policy and legislative developments … | 2010/10/30 | Download |
| Effect of Speeds and Speed Limit Enforcement on Potential Emissions Reduction and Safety (2010) | This task identified the effect of speed limit enforcement, which, if implemented, has the potential … | 2010/10/30 | Download |
| Characterization of In-use emissions from TxDOT’s Non-road Equipment Fleet (2010) | This research defines the characteristics of in-use emissions of TxDOT’s non-road diesel equipment. The research … | 2010/10/30 | Download |
| Generally Applicable Emission Performance Measures (2010) | The purpose of this subtask was to develop a framework and identify generally applicable performance … | 2010/10/30 | Download |
| Emissions Impacts by Freight Mode (2010) | The overall goal of this task was to investigate the air quality implications of freight … | 2010/10/30 | Download |
| Impact of Transportation Technology and Operation-Based Emission Reduction Strategies – Extended Idling (2009) | The purpose of this 2009 subtask was to identify major heavy-duty truck idling generators and … | 2009/10/30 | Download |
| Non-Criteria Pollutant Requirements and Impacts: Mobile Source Air Toxics and Greenhouse Gas Emissions in a State and Local Transportation Context (2009) | Non-criteria pollutants, such as mobile source air toxics and greenhouse gases, by practice, fall outside … | 2009/10/30 | Download |
| Compendium of 8 Hour Ozone State Implementation Plan (SIP) Mobile Source Control Strategies (2009) | Wide arrays of mobile source reduction strategies are being used throughout Texas and elsewhere. However, … | 2009/10/30 | Download |
| Deployment of Alternative Fuels in Texas (2009) | This report covers alternative fuel usage trends to provide overall context on non-traditional fuel usage. … | 2009/10/30 | Download |
