Transportation Research Board | National Academies

Time 2020-06-24 06:05:47

Web Name: Transportation Research Board | National Academies

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Multiday Event | June 14-17, 2020 International Conference on Innovations in Travel Modeling - Will not be held as scheduled 2:00PM - 3:30PM (ET) Webinar June 16, 2020 TRB Webinar: Transportation Experiences and Next Steps in the COVID-19 Pandemic 2:00PM - 3:30PM (ET) Webinar June 17, 2020 TRB Webinar: Let's Work Together - Collaborative Partnering for Airports 2:20PM - 3:30PM (ET) Webinar June 18, 2020 TRB Webinar: Bearing with Bridges – Bearings and Expansion Joints on Highway Bridges 2:00PM - 3:30PM (ET) June 23, 2020 TRB Webinar: Construction Project Staffing Strategies for Transportation Agencies 9:00AM - 4:00PM (ET) Meeting Multiday Event | June 24-25, 2020 U.S. Coast Guard Maritime Domain Awareness Committee Meeting 06 ( REMOTE ) 1:00PM - 2:30PM (ET) Webinar June 24, 2020 TRB Webinar: Pavement Deflections – Past, Present, and Future 2:00PM - 3:00PM (ET) Webinar June 25, 2020 TRB Webinar: COVID-19 Impacts on Managed Lanes 9:00AM - 5:00PM (ET) Meeting Multiday Event | June 29-30, 2020 Cybersecurity Workforce of the Federal Aviation Administration Committee Meeting 3 View More TRID TRID contains over1.25 million recordsof transportation research worldwide,combined from TRB’s Transportation Research Information Services (TRIS)Database andOECD’s Joint Transport Research Centre’s International Transport Research Documentation (ITRD) Database. Access TRID TRB Blog TRB is home to a wealth of transportation research. This blog provides an easy entry into some of that research, as well as showcasingstories and significanteventsin TRB's history. Read More Latest Publications ACRP Web-Only Document 47: Commercial Space Operations Noise and Sonic Boom Measurements develops a well-documented, high-fidelity database of acoustic measurements acquired using a consistent data collection and analysis protocol. Ultimately, the acoustic database developed during this effort will enable future researchers to validate and enhance the models used to predict community noise exposure from space transportation activities. A database is included as part of the publication." resources="[object Object]"> 2020 Commercial Space Operations Noise and Sonic Boom Measurements View Report NCHRP Research Report 940: Solid-State Roadway Lighting Design Guide: Volume 2: Research Overview determines the current guidance for the use of Solid State Lighting (SSL); identifies the research that still needs to be accomplished to assist in its proper implementation; and develops a comprehensive, easy to use, set of guidelines using currently available information and new research being proposed as part of this project.Also see this guide's accompanying report, NCHRP Research Report 940: Solid-State Roadway Lighting Design Guide: Volume 1: Guidance." resources=""> 2020 Solid-State Roadway Lighting Design Guide: Volume 2: Research Overview View Report NCHRP Research Report 940: Solid-State Roadway Lighting Design Guide: Volume 1: Guidance develops more comprehensive guidelines in American Association of State Highway Transportation Officials (AASHTO)-standard format for the application of roadway lighting related to the widespread adoption of SSL, and identifies gaps in knowledge where possible future research will enhance these guidelines.Also see this guide's accompanying report, NCHRP Research Report 940: Solid-State Roadway Lighting Design Guide: Volume 2: Research Overview." resources=""> 2020 Solid-State Roadway Lighting Design Guide: Volume 1: Guidance View Report NCHRP Research Report 939: Guidebooks for Post-Award Contract Administration for Highway Projects Delivered Using Alternative Contracting Methods, Volume 1: Design–Build Delivery provides a practitioner’s guide for construction administration on Design–Build (D-B) projects. Whether an agency is using the D-B contracting method for the first time or has significant experience with the method, this Guidebook provides useful strategies and tools to support D-B project administration. Highway agency personnel are the audience for the Guidebook." resources=""> 2020 Guidebooks for Post-Award Contract Administration for Highway Projects Delivered Using Alternative Contracting Methods, Volume 1: Design–Build Delivery View Report NCHRP Research Report 939: Guidebooks for Post-Award Contract Administration for Highway Projects Delivered Using Alternative Contracting Methods, Volume 2: Construction Manager–General Contractor Delivery provides a practitioner’s guide for construction administration on construction manager–general contractor (CM-GC) projects. Vol. 1, on design-build delivery, and Vol. 3, a research overview, are also available." resources=""> 2020 Guidebooks for Post-Award Contract Administration for Highway Projects Delivered Using Alternative Contracting Methods, Volume 2: Construction Manager–General Contractor Delivery View Report NCHRP Research Report 939: Guidebooks for Post-Award Contract Administration for Highway Projects Delivered Using Alternative Contracting Methods, Volume 3: Research Overview provides the necessary methods and tools to help state agencies better administer Design–Build (D-B) and construction manager–general contractor (CM-GC) contracts on highway construction projects. This Research Report documents the rigorous process followed to produce these two Guidebooks. Vol. 1, on design-build delivery, and Vol. 2, on construction manager–general contractor delivery, are also available." resources=""> 2020 Guidebooks for Post-Award Contract Administration for Highway Projects Delivered Using Alternative Contracting Methods, Volume 3: Research Overview View Report NCHRP Synthesis 556: Asset Management Approaches to Identifying and Evaluating Assets Damaged Due to Emergency Events furnishes documentary evidence of the approaches that state DOTs have taken to identify and evaluate locations where highway assets have been repeatedly damaged and to identify considerations that have been made for mitigating the risk of recurring damage to assets in those areas. The report is intended to help transportation agencies with building data sets and tools that support the evaluation of damage to assets associated with emergency events and to illustrate methodologies that are being used to integrate these risks into asset investment decisions." resources=""> 2020 Asset Management Approaches to Identifying and Evaluating Assets Damaged Due to Emergency Events View Report NCHRP Research Report 942: Evaluating the Suitability of Roadway Corridors for Use by Monarch Butterflies provides guidance for roadside managers to determine the potential of their roadway corridors as habitat for monarch butterflies. The report also includes several tools and decision-support mechanisms to optimize habitat potential in a manner that is compatible with the continued operation and maintenance of the roadside." resources=""> 2020 Evaluating the Suitability of Roadway Corridors for Use by Monarch Butterflies View Report NCHRP Research Report 946: Procedures and Guidelines for Validating Contractor Test Data reviews and evaluates the procedures and practices used in the acceptance of construction materials. The report also proposes a related practice for incorporation into AASHTO Standard Specifications for Transportation Materials and Methods of Sampling and Testing. Supplemental files to the report include Appendices A through E, available as a single PDF file, a State Highway Agency Survey (Appendix A), Survey Responses (Appendix B), Numerical Simulations (Appendix C), State Highway Agency Date Analysis (Appendix D), and Statistical Tables (Appendix E)." resources="[object Object]"> 2020 Procedures and Guidelines for Validating Contractor Test Data View Report NCHRP Synthesis 555: Estimating and Contracting Rock Slope Scaling Adjacent to Highways documents current rock slope scaling practices adjacent to highways. An appendices document is also included as part of the publication." resources="[object Object]"> 2020 Estimating and Contracting Rock Slope Scaling Adjacent to Highways View Report NCHRP Research Report 944: Guide to Calculating Ownership and Operating Costs of Department of Transportation Vehicles and Equipment: An Accounting Perspective provides a practical, logical, and transparent framework for conducting fleet cost accounting in state DOTs. The Guide focuses on the unique aspects of DOT fleets, although the principles in the Guide could be extended to any public fleet. Without a complete understanding of fleet costs, the fundamental functions of fleet managers—such as equipment replacement decisions, outsourcing decisions, and budget requests—are diminished. Ultimately, fleet managers need full confidence in their fleet cost numbers to have credibility with fleet stakeholders." resources=""> 2020 Guide to Calculating Ownership and Operating Costs of Department of Transportation Vehicles and Equipment: An Accounting Perspective View Report TCRP Synthesis 149: Transit Signal Priority: Current State of the Practice documents the current practice of TSP, which is an important tool that increases bus speeds and reliability, thereby improving transit system efficiency and effectiveness. Twenty-eight (61%) of the 46 surveyed transit agencies had active TSP deployments, and 13 transit agencies (28%) either are in predeployment testing or have plans to pursue TSP in the future." resources=""> 2020 Transit Signal Priority: Current State of the Practice View Report NCHRP Report 934: Traffic Forecasting Accuracy Assessment Research seeks to develop a process and methods by which to analyze and improve the accuracy, reliability, and utility of project-level traffic forecasts. The report also includes tools for engineers and planners who are involved in generating traffic forecasts, including: Quantile Regression Models, a Traffic Accuracy Assessment, a Forecast Archive Annotated Outline, a Deep Dive Annotated Outline, and Deep Dive Assessment Tables," resources="[object Object],[object Object],[object Object],[object Object],[object Object]"> 2020 Traffic Forecasting Accuracy Assessment Research View Report ACRP Web-Only Document 46: Recovering International Recyclables from In-Flight Service finds that supply chains, advanced stakeholder engagement, value chain collaboration, and a globally standardized and adopted approach may be needed to increase and better monetize the recovery of Non-Contaminated Recyclable Materials (NCRM). With a multi-stakeholder approach, airports, airlines, and flight kitchens, along with support partners, can affect the recovery efficiency of NCRM. Through these collaborative efforts, gaps in supply and collection chains can be addressed." resources=""> 2020 Recovering International Recyclables from In-Flight Service View Report TCRP Research Report 213: Data Sharing Guidance for Public Transit Agencies – Now and in the Future is designed to help agencies make decisions about sharing their data, including how to evaluate benefits, costs, and risks. Many transit agencies have realized benefits from sharing their internal data sets, ranging from improved customer information, to innovative research findings that help the transit agency improve performance." resources=""> 2020 Data Sharing Guidance for Public Transit Agencies – Now and in the Future View Report NCHRP Synthesis 550: Alternative Intersection Design and Selection documents the evaluation and selection processes within state departments of transportation (DOTs) for intersection projects. Roundabouts are the most widely implemented type of alternative intersection. Ninety percent of state DOTs that responded to the synthesis survey reported having at least one roundabout in their jurisdiction open and operational. Roundabouts also had the highest reported number of facilities in project development as 88% of respondents indicated there was at least one roundabout under development at their DOT." resources=""> 2020 Alternative Intersection Design and Selection View Report NCHRP Synthesis 547: Advancements in Use of Geophysical Methods for Transportation Projects evaluates the current state of practice in the use of geophysical methods by state transportation agencies. Challenges and obstacles remain that must be overcome if routine implementation of geophysical methods for transportation projects is to be realized. Uncertainties associated with insufficient or poor site characterization can lead to overly conservative designs, increased risk of poor performance, cost increases attributable to changed conditions, and project delays." resources=""> 2020 Advancements in Use of Geophysical Methods for Transportation Projects View Report NCHRP Research Report 926: Guidance to Improve Pedestrian and Bicyclist Safety at Intersections provides a succinct process for selecting intersection designs and operational treatments that provide safety benefits for pedestrians and bicyclists, and the most appropriate situation for their application. In 2016 and 2017, pedestrians and bicyclists made up 18 percent of all fatalities on U.S. streets, despite representing less than 4 percent of all trips. This continues an upward trend in these modes’ share of roadway fatalities since 2007." resources=""> 2020 Guidance to Improve Pedestrian and Bicyclist Safety at Intersections View Report NCHRP Synthesis 548: Development and Use of As-Built Plans by State Departments of Transportation examines the current state of the practice in as-built development and use across the United States. Over the years, as-built plans have been the method used by the construction industry to capture and record construction changes and additions that are not represented in the original plan drawings. The accuracy and completeness of these plans are essential for operations, maintenance, and rehabilitation of current transportation infrastructure." resources=""> 2020 Development and Use of As-Built Plans by State Departments of Transportation View Report NCHRP Research Report 935: Proposed AASHTO Seismic Specifications for ABC Column Connections develops AASHTO specifications for three types of precast column connections to facilitate ABC implementation in moderate- and high-seismic regions." resources=""> 2020 Proposed AASHTO Seismic Specifications for ABC Column Connections View Report NCHRP LRD 80: Buy America Requirements for Federal Highway Projects summarizes the intent and application of the provision. It also summarizes the procedure that FHWA has implemented for granting waivers and the impact that court interpretation of such waivers has had on the industry." resources=""> 2020 Buy America Requirements for Federal Highway Projects View Report TCRP Synthesis 148: Business Models for Mobile Fare Apps documents current practices and experiences of transit agencies that offer mobile fare payment applications to transit riders. The report includes case examples from six cities: Santa Monica, Denver, Austin, Chicago, Dallas, and Ontario, Canada." resources=""> 2020 Business Models for Mobile Fare Apps View Report NCHRP Research Report 941: Bicyclist Facility Preferences and Effects on Increasing Bicycle Trips provides insights from communities where on-road cycling for transportation is less common, particularly in the Southeast U.S.The report is accompanied by a poster presentation and a set of presentation slides that summarize the project." resources="[object Object],[object Object]"> 2020 Bicyclist Facility Preferences and Effects on Increasing Bicycle Trips View Report NCHRP Synthesis 546: Use of Weigh-in-Motion Data for Pavement, Bridge, Weight Enforcement, and Freight Logistics Applications documents how DOTs incorporate weigh-in-motion data into such applications as bridge and pavement design and management, load ratings, weight enforcement support, and freight planning and logistics." resources=""> 2020 Use of Weigh-in-Motion Data for Pavement, Bridge, Weight Enforcement, and Freight Logistics Applications View Report NCHRP Web-Only Document 272: Existing and Emerging Highway Infrastructure Preservation, Maintenance, and Renewal Definitions, Practices, and Scenarios provides appendices to NCHRP Report 750, Volume 7: Preservation, Maintenance, andRenewal of Highway Infrastructure." resources=""> 2020 Existing and Emerging Highway Infrastructure Preservation, Maintenance, and Renewal Definitions, Practices, and Scenarios View Report ACRP Research Report 14: Deicing Planning Guidelines and Practices for Stormwater Management Systems, second edition, explores a wide array of practices designed to provide for the practical, cost-effective control of runoff from aircraft and airfield deicing and anti-icing operations. Additional resources with the report include a Decision Support Tool and the Decision Support Tool User Guide." resources="[object Object],[object Object]"> 2020 Deicing Planning Guidelines and Practices for Stormwater Management Systems, second edition View Report ACRP Research Report 216: Guidebook for Assessing Collaborative Planning Efforts Among Airport and Public Planning Agencies offers guidance for enhancing collaboration between airports and metropolitan surface transportation planning agencies. An additional resource is the contractor's final report." resources="[object Object]"> 2020 Guidebook for Assessing Collaborative Planning Efforts Among Airport and Public Planning Agencies View Report NCHRP Research Report 933: Evaluating Mechanical Properties of Earth Material During Intelligent Compaction details the development of procedures to estimate the mechanical properties of geomaterials using intelligent compaction (IC) technology in a robust manner so that departments of transportation can incorporate it in their specifications." resources=""> 2020 Evaluating Mechanical Properties of Earth Material During Intelligent Compaction View Report NCHRP Web-Only Document 281: Integrating Tribal Expertise into Processes to Identify, Evaluate, and Record Cultural Resources explores how unique tribal perspectives and expertise could inform the tribal engagement and consultation process associated with the requirements and intent in the Section 106 process for successful project outcomes on surface transportation projects. Additional resources with the document include a Quick-Reference Guide and a PowerPoint Presentation." resources="[object Object],[object Object]"> 2020 Integrating Tribal Expertise into Processes to Identify, Evaluate, and Record Cultural Resources View Report TCRP Research Report 212: Stray Current Control of Direct Current-Powered Rail Transit Systems: A Guidebook allows transit agencies, design, and maintenance practitioners to influence new system construction, extensions, and maintenance and operation of existing systems. Improving the Safety and Sustainability of Stray Current Control of DC-Powered Rail Transit Systems (PowerPoint slide deck) highlights the research review and guidebook development." resources="[object Object]"> 2020 Stray Current Control of Direct Current-Powered Rail Transit Systems: A Guidebook View Report TCRP Synthesis 146: Transit Security Preparedness identifies current practices transit systems can use to enhance their security measures and to identify opportunities to apply security technology applications used in other industries to the transit environment. One size does not fit all in the context of transit security. However, there are common themes in all effective security preparedness approaches." resources=""> 2020 Transit Security Preparedness View Report ACRP Research Report 215: Transportation Network Companies (TNCs): Impacts to Airport Revenues and Operations—Reference Guide identifies strategies and practical tools for adapting airport landside access programs to reflect the evolution of ground transportation modes such as TNCs and autonomous vehicles. A searchable statistical database of the airport survey and the Airport Mode Choice and Ground Simulator Template (an Excel-based simulation template), which shows how the mode-choice model is applied to estimate revenue impact, supplement the report." resources="[object Object],[object Object]"> 2020 Transportation Network Companies (TNCs): Impacts to Airport Revenues and Operations—Reference Guide View Report ACRP Research Report 218: Building and Maintaining Air Service Through Incentive Programs is a guidebook offering advice for using incentive programs for growing and maintaining commercial air service. The development, execution, and monitoring of air service incentive programs can be complex, involve multiple stakeholders, and must address federal compliance issues. An additional resource accompanying the report is Building and Maintaining Air Service Through Incentive Programs:Contractor’s Final Technical Report." resources="[object Object]"> 2020 Building and Maintaining Air Service Through Incentive Programs View Report NCHRP Synthesis 549: Incorporating Roadway Access Management into Local Ordinances documents regulatory tools and practices used by local governments to implement access management, as well as provides examples of how state transportation agencies are coordinating with local governments to advance access management objectives. The review of local ordinances and state and local government coordination practices indicates that access management is being actively implemented throughout the United States. Typical features of local ordinances reviewed included access classification schemes and corresponding spacing standards, interparcel cross access requirements, intersection functional area or corner clearance standards, limits on driveways per site, unified access and circulation requirements for outparcels, allowances for deviations from standards, and access permitting and development (site plan) review procedures and criteria." resources=""> 2020 Incorporating Roadway Access Management into Local Ordinances View Report NCHRP Research Report 927: Evaluating the Effects of Recycling Agents on Asphalt Mixtures with High RAS and RAP Binder Ratios presents an evaluation of how commercially available recycling agents affect the performance of asphalt mixtures incorporating RAP and RAS at high recycled binder ratios." resources=""> 2020 Evaluating the Effects of Recycling Agents on Asphalt Mixtures with High RAS and RAP Binder Ratios View Report NCHRP Research Report 928: Identification of Factors Contributing to the Decline of Traffic Fatalities in the United States from 2008 to 2012 provides an analysis that identifies the specific factors in the economic decline that affected fatal crash risk, while taking into account the long-term factors that determine the level of traffic safety. A key insight into the analysis of the factors that produced the sharp drop in traffic fatalities was that the young contributed disproportionately to the drop-off in traffic fatalities. Of the reduction in traffic fatalities from 2007 to 2011, people 25-years-old and younger accounted for nearly 48 percent of the drop, though they were only about 28 percent of total traffic fatalities prior to the decline. Traffic deaths among people 25-years-old and younger dropped substantially more than other groups. Young drivers are known to be a high-risk group and can be readily identified in the crash data. Other high-risk groups also likely contributed to the decline but they cannot be identified as well as age can." resources=""> 2020 Identification of Factors Contributing to the Decline of Traffic Fatalities in the United States from 2008 to 2012 View Report NCHRP Research Report 938: Incorporating the Costs and Benefits of Adaptation Measures in Preparation for Extreme Weather Events and Climate Change—Guidebook was developed to try to fill the gaps identified by DOTs. It is intended to provide a consolidated resource for transportation practitioners to be able to more readily consider CBAs as a tool in their investment-decision making processes when considering different climate and extreme weather adaptation alternatives. This report has additional resources, including a Power Point presentation that describes the research and the results, a spreadsheet tool that provides an approximate test to see if it would be cost-effective to upgrade assets to the future conditions posed by climate change, and a spreadsheet tool that uses existing conditions without climate change only to calculate the new return period for future conditions with climate change." resources="[object Object],[object Object],[object Object]"> 2020 Incorporating the Costs and Benefits of Adaptation Measures in Preparation for Extreme Weather Events and Climate Change—Guidebook View Report TCRP Research Report 211: Guidebook for Detecting and Mitigating Low-Level DC Leakage and Fault Currents in Transit Systems provides specifications for sensors being tested in the field and outlines their capabilities and appropriate operating conditions." resources=""> 2020 Guidebook for Detecting and Mitigating Low-Level DC Leakage and Fault Currents in Transit Systems View Report TCRP Synthesis 147: Attracting, Retaining, and Advancing Women in Transit explores the strategies that have been deployed in transit and other related industries in order to attract, retain, and advance women in a variety of roles. A critical first step to ensure success in these areas is to remove barriers to entry and address challenges women face once employed." resources=""> 2020 Attracting, Retaining, and Advancing Women in Transit View Report Conference Proceedings on the Web 26: Public–Private Partnerships: What Are the Lessons Learned? is a summary of the presentations and discussions at an ACRP Insight Event held July 10-11, 2019, in Washington, DC. These in-depth, face-to-face gatherings are designed to promote communication and collaboration, foster innovation, and help identify areas of future interest and research, especially for topics of emerging importance." resources=""> 2020 Public–Private Partnerships: What Are the Lessons Learned? View Report NCHRP Web-Only Document 278: Context-Sensitive Design Options for Workhorse Bridges in Rural Historic Districts—Practitioner’s Guide and Research Report is designed to assist practitioners in helping these bridges comply with Section 106 of the National Historic Preservation Act (NHPA) and Section 4(f) of the Department of Transportation Act.Additional resources with the report include a Power Point Presentation and a Design Idea Book, which presents design features that have been used to achieve context-sensitive designs in or adjacent to rural historic districts." resources="[object Object],[object Object]"> 2020 Context-Sensitive Design Options for Workhorse Bridges in Rural Historic Districts—Practitioner’s Guide and Research Report View Report ACRP Research Report 211: Guidance for Using the Interactive Tool for Understanding NEPA at General Aviation Airports, and the accompanying interactive tool that was developed, will help airport staff from GA airports understand the NEPA process. The report provides an overview of NEPA, when it is applied, and the three levels of NEPA review. The tool will be helpful in better understanding the level of effort that may be required to comply with NEPA. An annotated bibliography, which was Appendix A to the Contractor’s Final Report, is also available." resources="[object Object],[object Object]"> 2020 Guidance for Using the Interactive Tool for Understanding NEPA at General Aviation Airports View Report TCRP Synthesis 144: Multimodal Fare Payment Integration documents current practices and experiences of transit agencies dealing with the complexities of multimodal fare payment convergence." resources=""> 2020 Multimodal Fare Payment Integration View Report ACRP Web-Only Document 45: Airport Environmental Research Roadmap Narrative Report presents a five-year prioritized Research Roadmap that identifies gaps in knowledge and research ideas in the area of airport environmental management." resources=""> 2020 Airport Environmental Research Roadmap Narrative Report View Report NCHRP Web-Only Document 280: Valuing Wildlife Crossings and Enhancements for Mitigation Credits synthesizes current practices used by state DOTs and their partners for calculating and applying mitigation credits for wildlife crossings and other connectivity enhancements that provide safe passage for wildlife across highways. Accompanying the report is a Power Point presentation entitled, Valuing Wildlife Crossings and Enhancements for Mitigation Credits. " resources="[object Object]"> 2020 Valuing Wildlife Crossings and Enhancements for Mitigation Credits View Report ACRP Research Report 210: Innovative Solutions to Facilitate Accessibility for Airport Travelers with Disabilities outlines innovative solutions to facilitate accessibility for passengers with a variety of physical, sensory, and/or cognitive challenges. The report includes additional materials, including case-study highlights in Appendix A, a user-needs survey in Appendix B, and a Wayfinding Accessibility Audit Checklist, which also includes a separate introduction." resources="[object Object],[object Object],[object Object]"> 2020 Innovative Solutions to Facilitate Accessibility for Airport Travelers with Disabilities View Report TCRP Research Report 215: Minutes Matter: A Bus Transit Service Reliability Guidebook details eight steps that a transit agency can undertake to develop and maintain a Reliability Improvement Program. There is also a Power Point presentation that provides an overview of the project accompanying the report. " resources="[object Object]"> 2020 Minutes Matter: A Bus Transit Service Reliability Guidebook View Report ACRP Legal Research Digest 38: Legal Issues Related to Large-Scale Airport Construction Projects focuses on those legal issues causing the most significant risks during planning, design, permitting, procurement, and construction." resources=""> 2020 Legal Issues Related to Large-Scale Airport Construction Projects View Report NCHRP Web-Only Document 275: Potential Section 106 Exempted Categories or Program Comments for Federal Highway Administration Projects: National Streamlining Opportunities examines the use of Program Alternatives by state departments of transportation and explores potential opportunities for additional Program Alternatives. There is also a presentation accompanying the report." resources="[object Object]"> 2020 Potential Section 106 Exempted Categories or Program Comments for Federal Highway Administration Projects: National Streamlining Opportunities View Report NCHRP Research Report 923: Workforce Optimization Workbook for Transportation Construction Projects provides state transportation agencies with guidance to identify their construction staffing needs and how to best allocate their state or consultant engineering and inspection staff and consultant resources to highway construction projects. The guidance provides 35 specific staffing strategies that may help alleviate construction staff challenges. There are also an associated e-Workforce Optimization Workbook (e-WOW) spreadsheet and a User Guide." resources="[object Object],[object Object]"> 2020 Workforce Optimization Workbook for Transportation Construction Projects View Report ACRP Research Report 213: Estimating Market Value and Establishing Market Rent at Small Airports provides airport management, policymakers, and staff a resource for developing and leasing airport land and improvements, methodologies for determining market value and appropriate rents, and best practices for negotiating and re-evaluating current lease agreements. There are many factors that can go into the analysis, and this report reviews best practices in property development." resources=""> 2020 Estimating Market Value and Establishing Market Rent at Small Airports View Report Conference Proceedings on the Web 26: Public–Private Partnerships: What Are the Lessons Learned? is a summary of the presentations and discussions at an ACRP Insight Event held July 10-11, 2019, in Washington, DC. These in-depth, face-to-face gatherings are designed to promote communication and collaboration, foster innovation, and help identify areas of future interest and research, especially for topics of emerging importance." resources=""> 2020 Public–Private Partnerships: What Are the Lessons Learned? View Report 2020 Current Practices in the Use of Onboard Technologies to Avoid Transit Bus Incidents and Accidents View Report TCRP Research Report 209: Analysis of Recent Public Transit Ridership Trends presents a current snapshot of public transit ridership trends in the U.S. on bus and rail services in urban and suburban areas, focusing on what has changed in the past several years. It also explores and presents strategies that transit agencies are considering and using for all transit modes in response to changes in ridership. Ten case studies are included to better understand individual strategies transit agencies are using to mitigate ridership losses and increase ridership overall. Seven of the 10 transit agencies investigated in the case studies followed the trend, with ridership increases between 2012 and 2015 followed by steady decreases in ridership. Generally, on-time performance has been improving, although it is not causing transit ridership to increase." resources=""> 2020 Analysis of Recent Public Transit Ridership Trends View Report NCHRP Research Report 940: Solid-State Roadway Lighting Design Guide: Volume 2: Research Overview determines the current guidance for the use of Solid State Lighting (SSL); identifies the research that still needs to be accomplished to assist in its proper implementation; and develops a comprehensive, easy to use, set of guidelines using currently available information and new research being proposed as part of this project.Also see this guide's accompanying report, NCHRP Research Report 940: Solid-State Roadway Lighting Design Guide: Volume 1: Guidance." resources=""> 2020 Solid-State Roadway Lighting Design Guide: Volume 2: Research Overview View Report NCHRP Research Report 940: Solid-State Roadway Lighting Design Guide: Volume 1: Guidance develops more comprehensive guidelines in American Association of State Highway Transportation Officials (AASHTO)-standard format for the application of roadway lighting related to the widespread adoption of SSL, and identifies gaps in knowledge where possible future research will enhance these guidelines.Also see this guide's accompanying report, NCHRP Research Report 940: Solid-State Roadway Lighting Design Guide: Volume 2: Research Overview." resources=""> 2020 Solid-State Roadway Lighting Design Guide: Volume 1: Guidance View Report ACRP Research Report 220: Guidebook for Developing a Zero- or Low-Emissions Roadmap at Airports covers all steps of roadmap development, from start to finish, using conceptual diagrams, examples, best practices, and links to external tools and resources. While the main focus of this Guidebook is airport‐controlled greenhouse gas (GHG) emissions, it provides discussion about airport‐influenced emissions from airlines, concessionaires, and passengers. Whereas other guidebooks and reference material provide airports with information on emissions mitigation and management (for example, the Federal Aviation Administration’s Airport Carbon Emissions Reduction, ACRP Report 11: Guidebook on Preparing Airport Greenhouse Gas Emissions Inventories, and the Airport Council International’s Guidance Manual: Airport Greenhouse Gas Emissions Management), this Guidebook articulates steps for creating an airport‐specific emissions roadmap." resources=""> 2020 Guidebook for Developing a Zero- or Low-Emissions Roadmap at Airports View Report Popular Publications Critical Issues in Transportation 2019. In this report, which is updated periodically by the TRB Executive Committee, a series of challenging questions are posed to explore issues and opportunities that may arise 10 to 20 years into the future. These questions, 63 in all, have been organized into 12 topic areas and provide a way to frame future areas of research, policy analysis, and debate. Critical issues identified in this report deserve attention because of transportation’s central role in serving individuals and society. This document serves to sharpen society's collective understanding of transportation and its ramifications, while informing decisions by individual citizens and officials in both the public and private sectors. The issues have been identified and documented from a U.S. perspective, and are also common across developed nations. Download the executive overview, Critical Issues in Transportation: Policy Snapshot and or visit www.TRB.org/criticalissues from your mobile device. On March 5, 2019, TRB and the National Transportation Safety Board (NTSB) cohosted a webinar that covered TRB’s Critical Issues in Transportation 2019 report and the 2019-2020 NTSB’s Most Wanted List. Presenters focused on issues of safety and security across all modes of transportation." resources="[object Object],[object Object],[object Object]"> 2019 Critical Issues in Transportation 2019 View Report View the videos, recorded webcast, graphics, summary booklet, press release, and highlights page at interstate.trb.org. " resources="[object Object],[object Object],[object Object],[object Object]"> 2018 Renewing the National Commitment to the Interstate Highway System: A Foundation for the Future View Report Quantity of travel, the magnitude of use of a transportation facility or service; Quality of travel, users’ perceptions of travel on a transportation facility or service with respect to their expectations; Accessibility, the ease with which travelers can engage in desired activities; and Capacity, the ability of a transportation facility or service to meet the quantity of travel demanded of it. Notice to current Examiners of the Fundamentals of Engineering (FE) Exam and the Principles and Practice of Engineering (PE) Exam: Current versions of these exams are based on the Highway Capacity Manual 2010 (HCM2010) which is available in the TRB store. Future updates of the exam based on HCM6 are in review by the accreditation agency and will be noted on the TRB website." resources="[object Object]"> 2016 Highway Capacity Manual 6th Edition: A Guide for Multimodal Mobility Analysis View Report 2014 A Guide for Public Transportation Pandemic Planning and Response View Report 2012 Track Design Handbook for Light Rail Transit, Second Edition View Report 2015 Signal Timing Manual - Second Edition View Report 2010 Roundabouts: An Informational Guide – Second Edition View Report 2010 Airport Passenger Terminal Planning and Design, Volume 1: Guidebook View Report 2018 Broadening Understanding of the Interplay Among Public Transit, Shared Mobility, and Personal Automobiles View Report 2018 Systemic Pedestrian Safety Analysis View Report 2018 Battery Electric Buses—State of the Practice View Report 2019 Guidebook for Managing Small Airports - Second Edition View Report Technical Appendix 1: Literature Review and Project Bibliography Technical Appendix 2: Demographics in Support of Chapter 2 Technical Appendix 3: Geography and Neighborhood Type in Support of Chapter 3 Technical Appendix 4: Survey and Market Segmentation in Support of Chapter 4 Technical Appendix 5: Analysis of Preference in Support of Chapter 5 Technical Appendix 6: Integrated Behavioral Modeling in Support of Chapter 6 Technical Appendix 7: Information and Communications Technology in Support of Chapter 7 " resources="[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]"> 2018 Understanding Changes in Demographics, Preferences, and Markets for Public Transportation View Report 2013 Design Guide for Bridges for Service Life View Report 2019 Manual on Subsurface Investigations View Report NCHRP Research Report 924: Foreseeing the Impact of Transformational Technologies on Land Use and Transportation reviews the characteristics of new transportation-related technologies and their applications in the transportation sector and explores a wide variety of potential impacts on areas such as travel and land use and planning projects." resources=""> 2020 Foreseeing the Impact of Transformational Technologies on Land Use and Transportation View Report 2004 The Owner's Role in Project Risk Management View Report Cost, Effectiveness, and Deployment of Fuel Economy Technologies for Light-Duty Vehicles estimates the cost, potential efficiency improvements, and barriers to commercial deployment of technologies that might be employed from 2020 to 2030. This report describes these promising technologies and makes recommendations for their inclusion on the list of technologies applicable for the 2017-2025 CAFE standards." resources="[object Object],[object Object],[object Object]"> 2015 Cost, Effectiveness, and Deployment of Fuel Economy Technologies for Light-Duty Vehicles View Report TCRP Research Report 209: Analysis of Recent Public Transit Ridership Trends presents a current snapshot of public transit ridership trends in the U.S. on bus and rail services in urban and suburban areas, focusing on what has changed in the past several years. It also explores and presents strategies that transit agencies are considering and using for all transit modes in response to changes in ridership. Ten case studies are included to better understand individual strategies transit agencies are using to mitigate ridership losses and increase ridership overall. Seven of the 10 transit agencies investigated in the case studies followed the trend, with ridership increases between 2012 and 2015 followed by steady decreases in ridership. Generally, on-time performance has been improving, although it is not causing transit ridership to increase." resources=""> 2020 Analysis of Recent Public Transit Ridership Trends View Report 2016 Shared Mobility and the Transformation of Public Transit View Report 2019 Resilience in Transportation Planning, Engineering, Management, Policy, and Administration View Report

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