TRB Transportation Research E-Newsletter

The Transportation Research E-Newsletter is a free weekly electronic service designed to keep individuals up-to-date on TRB activities and to highlight selected transportation research-related activities taking place at the federal and state levels, and within the academic and international transportation communities.  More than 70,000 people from around the world receive the E-Newsletter.

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-- Select 2019 -- October 8, 2019 October 1, 2019 September 24, 2019 September 17, 2019 September 10, 2019 September 3, 2019 August 27, 2019 August 20, 2019 August 13, 2019 August 6, 2019 July 30, 2019 July 23, 2019 July 16, 2019 July 9, 2019 July 1, 2019 June 25, 2019 June 18, 2019 June 11, 2019 June 4, 2019 May 28, 2019 May 21, 2019 May 14, 2019 May 7, 2019 April 30, 2019 April 23, 2019 April 16, 2019 April 9, 2019 April 2, 2019 March 26, 2019 March 19, 2019 March 12, 2019 March 5, 2019 February 26, 2019 February 19, 2019 February 12, 2019 February 5, 2019 January 29, 2019 January 22, 2019 January 15, 2019 January 8, 2019 January 2, 2019

-- Select 2018 -- December 18, 2018 December 11, 2018 December 4, 2018 November 27, 2018 November 20, 2018 November 13, 2018 November 6, 2018 October 30, 2018 October 23, 2018 October 16, 2018 October 9, 2018 October 2, 2018 September 25, 2018 September 18, 2018 September 11, 2018 September 4, 2018 August 28, 2018 August 21, 2018 August 14, 2018 August 7, 2018 July 31, 2018 July 24, 2018 July 17, 2018 July 10, 2018 July 3, 2018 June 26, 2018 June 19, 2018 June 12, 2018 June 5, 2018 May 29, 2018 May 22, 2018 May 15, 2018 May 8, 2018 May 1, 2018 April 24, 2018 April 17, 2018 April 10, 2018 April 3, 2018 March 27, 2018 March 20, 2018 March 13, 2018 March 6, 2018 February 27, 2018 February 20, 2018 February 13, 2018 February 6, 2018 January 30, 2018 January 23, 2018 January 16, 2018 January 9, 2018 January 2, 2018

-- Select 2017 -- December 19, 2017 December 12, 2017 December 5, 2017 November 28, 2017 November 20, 2017 November 14, 2017 November 7, 2017 October 31, 2017 October 24, 2017 October 17, 2017 October 10, 2017 October 3, 2017 September 26, 2017 September 19, 2017 September 12, 2017 September 5, 2017 August 29, 2017 August 22, 2017 August 15, 2017 August 8, 2017 August 1, 2017 July 25, 2017 July 18, 2017 July 11, 2017 July 5, 2017 June 27, 2017 June 20, 2017 June 13, 2017 June 6, 2017 May 30, 2017 May 23, 2017 May 16, 2017 May 9, 2017 May 2, 2017 April 25, 2017 April 18, 2017 April 11, 2017 April 4, 2017 March 28, 2017 March 21, 2017 March 14, 2017 March 7, 2017 February 28, 2017 February 21, 2017 February 14, 2017 February 7, 2017 January 31, 2017 January 24, 2017 January 17, 2017 January 10, 2017 January 3, 2017

-- Select 2016 -- December 20, 2016 December 13, 2016 December 6, 2016 November 29, 2016 November 21, 2016 November 15, 2016 November 8, 2016 November 1, 2016 October 25, 2016 October 18, 2016 October 11, 2016 October 4, 2016 September 27, 2016 September 20, 2016 September 13, 2016 September 6, 2016 August 30, 2016 August 23, 2016 August 16, 2016 August 9, 2016 August 2, 2016 July 26, 2016 July 19, 2016 July 12, 2016 July 5, 2016 June 28, 2016 June 21, 2016 June 14, 2016 June 7, 2016 May 31, 2016 May 24, 2016 May 17, 2016 May 10, 2016 May 3, 2016 April 26, 2016 April 19, 2016 April 12, 2016 April 5, 2016 March 29, 2016 March 22, 2016 March 15, 2016 March 8, 2016 March 1, 2016 February 23, 2016 February 16, 2016 February 9, 2016 February 2, 2016 January 26, 2016 January 19, 2016 January 12, 2016 January 5, 2016

-- Select 2015 -- December 29, 2015 December 22, 2015 December 15, 2015 December 8, 2015 November 30, 2015 November 23, 2015 November 17, 2015 November 10, 2015 November 3, 2015 October 28, 2015 October 20, 2015 October 13, 2015 October 6, 2015 September 29, 2015 September 22, 2015 September 15, 2015 September 8, 2015 September 1, 2015 August 25, 2015 August 18, 2015 August 11, 2015 August 4, 2015 July 28, 2015 July 21, 2015 July 14, 2015 July 7, 2015 June 30, 2015 June 23, 2015 June 16, 2015 June 9, 2015 June 2, 2015 May 26, 2015 May 19, 2015 May 12, 2015 May 5, 2015 April 28, 2015 April 21, 2015 April 14, 2015 April 7, 2015 March 31, 2015 March 24, 2015 March 17, 2015 March 10, 2015 March 3, 2015 February 24, 2015 February 17, 2015 February 10, 2015 February 3, 2015 January 30, 2015 January 27, 2015 January 20, 2015 January 6, 2015

-- Select 2014 -- December 23, 2014 December 16, 2014 December 9, 2014 December 2, 2014 November 24, 2014 November 18, 2014 November 11, 2014 November 4, 2014 October 28, 2014 October 21, 2014 October 14, 2014 October 7, 2014 September 30, 2014 September 23, 2014 September 16, 2014 September 9, 2014 September 2, 2014 August 26, 2014 August 19, 2014 August 12, 2014 August 5, 2014 July 29, 2014 July 22, 2014 July 15, 2014 July 8, 2014 July 1, 2014 June 24, 2014 June 17, 2014 June 10, 2014 June 3, 2014 May 27, 2014 May 20, 2014 May 13, 2014 May 06, 2014 April 29, 2014 April 22, 2014 April 15, 2014 April 8, 2014 April 1, 2014 March 25, 2014 March 18, 2014 March 11, 2014 March 4, 2014 February 25, 2014 February 18, 2014 February 11, 2014 February 4, 2014 January 28, 2014 January 21, 2014 January 7, 2014

-- Select 2013 -- December 30, 2013 December 23, 2013 December 17, 2013 December 10, 2013 December 3, 2013 November 25, 2013 November 19, 2013 November 12, 2013 November 5, 2013 October 29, 2013 October 22, 2013 October 15, 2013 October 8, 2013 October 1, 2013 September 24, 2013 September 17, 2013 September 10, 2013 September 3, 2013 August 27, 2013 August 20, 2013 August 13, 2013 August 6, 2013 July 30, 2013 July 23, 2013 July 16, 2013 July 9, 2013 July 2, 2013 June 25, 2013 June 18, 2013 June 11, 2013 June 04, 2013 May 28, 2013 May 21, 2013 May 14, 2013 May 7, 2013 April 30, 2013 April 23, 2013 April 16, 2013 April 9, 2013 April 2, 2013 March 26, 2013 March 19, 2013 March 12, 2013 March 5, 2013 February 26, 2013 February 19, 2013 February 12, 2013 February 5, 2013 January 29, 2013 January 22, 2013 January 8, 2013 January 2, 2013

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tuesday, October 9, 2019 Subscribe
Braceras, Shaheen among those appointed to lead TRB's Executive Committee Dr. Marcia McNutt, president of the National Academy of Sciences, has approved appointments for the TRB Executive Committee. Carlos Braceras, Executive Director of the Utah Department of Transportation, will become Chair of the Executive Committee at the completion of the TRB Annual Meeting on January 16, 2020. At the same time, Susan Shaheen, a...   2020 TRB Annual Meeting: Register Today Register and make hotel reservations today for the TRB 99th Annual Meeting, January 12-16, 2020, in Washington, D.C. Registration is required for all Annual Meeting attendees, including session speakers, poster presenters, and those who attend the exhibit hall, career fair, or any workshops. As part of TRB's Centennial Celebration, all full...   Is Your Organization Sending Four or More People to the 2020 Annual Meeting? Consider Being a Patron. It Pays! Consider leveraging your organization’s Annual Meeting registration investment to maximize its visibility by becoming an Annual Meeting Patron. Each patron package includes at least four complimentary registrations for your employees or almost a $4,000 value. Packages start at just $6,200 and all include the following promotional benefits:...   2020 TRB Annual Meeting: Submit Your Associated Groups' Function Space Requests Now TRB is taking requests from non-profit organizations and government agencies that would like function space to hold meetings in conjunction with TRB’s 99th Annual Meeting, which takes place January 12-16, 2020, in Washington, D.C. Qualifying organizations wishing to hold meetings or food-and-beverage events at the Marriott Marquis or the Walter ...   “Tell Us ‘Our’ Story” - How has TRB supported your professional development and career growth? TRB officially turns 100 on November 11, 2020. To help celebrate, TRB is asking you to “Tell Us ‘Our’ Story.” The TRB “Tell Us ‘Our’ Story" centennial activity is designed to allow as many of you (TRB’s volunteers and friends) as possible to participate in the TRB Centennial Celebration through the submission of your stories. The “Tell Us...   Featured Centennial Paper - Traffic Signal Systems Research: Past, Present, and Future Trends Learn about the history of traffic signal systems, and of the shifting interests of the community of researchers interested in them in the Standing Technical Committee on Traffic Signal Systems' Centennial Paper. Over the years, the committee has served as one of the principal forums on signal control and has stimulated many currents in research...   History Highlights - Landslides! The Cucaracha Slide had first bedeviled the builders of the Panama Canal in 1907. It appeared along the Gaillard (Culebra) Cut that carried the canal through the mountains and over the Continental Divide. A huge break in January 1913 pushed back the canal’s opening to August 1914. Slides continued and dredging struggled to keep pace. A...   TRB Webinar: Tunnel Operations Practices Featuring the Hampton Roads Bridge-Tunnel The transportation community is invited to a webinar on Wednesday, October 16, 2019 from 2:00 PM to 3:30 PM. This webinar is the first in a collaborative series between TRB, FHWA, and AASHTO. It will discuss recent developments in tunnel management practices and provide announcements from tunnel-related organizations. The webinar will discuss the...   NASEM Report Release Webinar: Reducing the Fuel Consumption and Greenhouse Gas Emissions of Medium- and Heavy-Duty Vehicles The National Academies of Sciences, Engineering, and Medicine will conduct a webinar on Tuesday, October 8, 2019 from 1-2PM ET that will discuss the efficiency of medium and heavy duty vehicles (MHDVs). Participants must register in advance of the session. MHDVs are a significant contributor to energy consumption and greenhouse gas emissions...   TRB Webinar: Understanding and Using Census Data for Tribal Transportation Programs Tribal transportation planners are invited to a TRB webinar on Thursday, October 17, 2019, from 1:00 PM to 2:30 PM ET. This webinar will provide information about accurately counting tribal communities in the American Community Survey and the 2020 census. The American Indian/Alaska Native (AI/AN) census has a significant role in several federal...   TRB Webinar: Comprehensive Renewable Resources Strategy for Airports Airport personnel are invited to a TRB webinar on Thursday, November 7, 2019, from 2:00 PM to 3:30 PM ET. The webinar features research from the Airport Cooperative Research Program (ACRP) Research Report 197: Guidebook for Developing a Comprehensive Renewable Resources Strategy. This webinar will discuss several renewable energy resources, offer...   First International Conference on 3D Printing and Transportation TRB is sponsoring the First International Conference on 3D Printing and Transportation on November 20-21, 2019 in Washington, DC. Additive Manufacturing (also known as 3D Printing) can profoundly change the dimensions of our future transportation system. Right now, industrial sectors are using 3D printing technologies to fabricate products...   7th Florida Automated Vehicles (FAV) Summit* TRB is cosponsoring the 6th Florida Automated Vehicles (FAV) Summit on November 20-22, 2019 in Miami, Florida. The summit addresses technologies, operations, and policy issues surrounding autonomous vehicles, including public transportation issues. It explores activities undertaken by Florida and other state departments of transportation to create ...   RFQ: Topical White Papers for the TRB Forum on Automated Vehicles and Shared Mobility TRB's National Cooperative Highway Research Board (NCHRP) has issued a request for qualifications to develop white papers on each of the ten issues for the TRB Forum on Preparing for Automated Vehicles and Shared Mobility. Proposals are due October 22, 2019.   TRB Straight to Recording for All: Road Tunnel Operations and Updates from PIARC TRB released a series of recordings in September 2019 that provide an update about activities of Technical Committee D.5 (TC-D.5), Road Tunnel Operations of the Permanent International Association of Road Congress (PIARC) in the 2016-2019 cycle. The goal of the Committee is to maintain and disseminate the state of practice information regarding...   Back To Top   Reducing the Fuel Consumption and Greenhouse Gas Emissions of Medium- and Heavy-Duty Vehicles, Phase Two Medium and heavy duty vehicles (MHDVs) are a significant contributor to energy consumption and greenhouse gas emissions in the U.S., accounting for approximately 22 percent of U.S. transportation energy consumption. The fuel consumption of MHDVs has only recently begun to be regulated at the federal level. To provide scientific and technical...   Identification of Factors Contributing to the Decline of Traffic Fatalities in the United States from 2008 to 2012 Between 2005 and 2011, the number of traffic fatalities in the U.S. declined by 11,031, from 43,510 in 2005 to 32,479 in 2011. This decline amounted to a reduction in traffic-related deaths of 25.4 percent, by far the greatest decline over a comparable period in the last 30 years. Historically, significant drops in traffic fatalities over a...   Update of Selected Studies in Transportation Law, Volume 8, Section 1: Civil Rights and Transportation Agencies Federal laws and regulations affect transportation agencies in their business practices, construction of facilities, hiring, and services provided to the public. TRB’s National Cooperative Highway Research Program (NCHRP) Legal Research Digest 77: Update of Selected Studies in Transportation Law, Volume 8, Section 1: Civil Rights and...   TRB Forum on Preparing for Automated Vehicles and Shared Mobility: Mini-Workshop on the Transition Toward Shared Automated Vehicles How do we bring governance into the era of digitization so it can manage demand and supply digitally? At the same time, it is necessary to correct for the existing inequities in our system, working closer with public- and private-sector partners and developing the infrastructure needed to ensure that the transition to shared and autonomous...   Relationship Between Laboratory Cracking Tests and Field Performance of Asphalt Mixtures Information exchanged during the 97th Annual Meeting of the Transportation Research Board in a session titled "Relationship Between Laboratory Cracking Tests and Field Performance of Asphalt Mixtures" is captured in Transportation Research Circular E-C251: Relationship Between Laboratory Cracking Tests and Field Performance of Asphalt Mixtures. ...   Workshop on the Use of Traffic Speed Deflection Device Data in Network- and Project-Level Pavement Decisions Traditionally, pavement management decision-making has relied on surface cracking as an indicator of structural condition. However, with early-intervention preservation activities to extend the life of pavements, surface cracks no longer are a reliable indicator of structural condition. In the past 15 years, traffic speed deflection devices...   Back To Top   U.S. Department of Transportation Overhauls Century-Old Rule The U.S. Department of Transportation’s Federal Highway Administration has published an updated federal rule to give states more flexibility and choice in which products or services they can use on federally funded highway projects. The goal of this change is to improve safety and increase efficiency while saving taxpayer dollars.   FMCSA Addresses Safety Intervention Priorities The ways the Federal Motor Carrier Safety Administration (FMCSA) identifies carriers that are not fit to operate commercial motor vehicles are evaluated in a report from the U.S. Department of Transportation’s Office of the Inspector General. This report also identifies challenges the FMCSA may face when implementing the suggested corrective...   Telematics and Data Science: Informing Energy-Efficient Mobility Transitioning fleets to electric vehicles (EVs) is explored in a report from the National Renewable Energy Laboratory at the U.S. Department of Energy. Fleets exploring the possibility of adding EVs seek an efficient, data-driven means to estimate both expenditures for vehicle and charging infrastructure and the appropriate placement of them to...   Back To Top   Durability and Inspection of Hybrid Composite Beams The general durability of hybrid composite beams (HCBs) is determined in a report from the Virginia Department of Transportation. The ability to inspect and ensure the durability of HCBs is important for transportation construction projects.   Evaluating Long Term Capacity & Ductility and the Design of Highway Bridges Design criteria of bridge beams prestressed with carbon fiber reinforced polymer (CFRP) strands are established in a report from the Michigan Department of Transportation. This report evaluates CFRP design parameters such as maximum tensile strength, guaranteed strength, environmental reduction factors, relaxation, creep rupture strength, short...   Life-Cycle Civil Integrated Management (CIM) Advancements in Preliminary Design BIM for Infrastructure New electronic project design and delivery methods are explored in a report from the Minnesota Department of Transportation. This report discusses the complete transformation of transportation projects in Minnesota to smart, paperless, 3D electronic delivery and identifies the potential challenges of this transformation.   Metropolitan Planning Organization (MPO) and Transit Agency Planning Coordination in Florida The current level of coordination and cooperation between Florida Metropolitan Planning Organizations and transit agencies is evaluated in a report from the Florida Department of Transportation. The goal of this report is to identify strategic issues for long-range transportation plans and transit development plans in Florida.   Back To Top   Why Don’t Women Cycle? A Case Study of Women’s Perceptions of Cycling in San Francisco Women’s perceptions about bicycling in San Francisco are explored in a report from SafeTREC at the University of California at Berkeley. Actual safety and women’s perceptions of it may play significant roles in whether or not they choose to bicycle in urban areas.   Pressure-Based Dispatch for Shared Autonomous Vehicles A policy for shared autonomous vehicle (SAV) systems is developed in a report from the Center for Transportation Studies at the University of Minnesota. With a properly planned scheduling system, SAVs have the potential to offer low-cost, convenient mobility-on-demand to travelers.   California Speeding and Aggressive Driving Study 2019: Data Analysis and Comparison with 2015 Survey Data Results Drivers’ perceptions on speeding and aggressive driving on California roadways are described in a report from SafeTREC at the University of California at Berkeley. This report surveys a cross-sectional representative sample of California drivers and their perceptions and behaviors related to speeding and aggressive driving.   Assessing the Cost-Effectiveness of Wyoming’s CMAQ Unpaved Road Dust Suppression Program, Year 1 The Congestion Mitigation and Air Quality Improvement program (CMAQ) in Wyoming is evaluated in a report from the Upper Great Plains Institute at North Dakota State University. The CMAQ program provides funding to transportation projects that contribute to air quality improvements.   Back To Top   Factors Affecting Cycling Levels of Service New Zealand cyclists’ perception of levels of service is explored in a report from the New Zealand Transport Agency. The goal of this report is to provide a user-centered approach to assess existing and proposed facilities that would enable better-informed decisions about cycling levels of service to plan and design bicycle facilities in New...   Rollover Crashes: Road Design Risk Factors and Infrastructure Solutions Road design factors associated with rollover events are identified in a report from Austroads. This report focuses on run-off-road crashes on high-speed rural roads and those events with high-severity outcomes. It is available for no fee after logging onto the site.   Sustainable Multimodality in Urban Regions Ways to organize existing transportation systems to enable sustainable multimodality is explored in a report from the World Road Association (PIARC). This report identifies the complexities faced by road administrations in various countries. It is available for no fee after logging onto the site.   Urban Transport Modeling in New Zealand – Data, Practice and Resourcing The current status of transportation modeling systems employed by the New Zealand government is examined in a report from the New Zealand Transport Agency. This report also summarizes the results of the Household Travel Survey.   Performance Requirements for Bitumen Sprayers The performance requirements of bitumen sprayers in Australia and New Zealand are outlined in a report from Austroads. This report updates information from the 2014 report. It is available for no fee after logging onto the site.   Back To Top   Understanding How Women Travel Mobility barriers and challenges that women face are identifies in a report from LA Metro. The goal of this report is to make informed decisions about transit planning and ensure that applicable departments at Metro are utilizing gender specific data to implement service changes and improvements.   How the US Interstate System Works The history and complexity of the US Interstate System is discussed in a recent issue of the podcast “Stuff You Should Know.” The hosts explore issues related to safety and accessibility, and identify administrative aspects of highways, including naming and funding.   Asphalt Pavement Industry Survey on Recycled Materials and Warm-Mix Asphalt Usage, 2018 The amount of recycled materials and warm-mix asphalt (WMA) used by the asphalt pavement industry is quantified in a report from the National Asphalt Pavement Association. The use of recycled materials in asphalt pavements conserves raw materials and reduces overall asphalt mixture costs, in addition to reducing material going into landfills. 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The TRB Transportation Research E-Newsletter regularly covers transportation research developments in the United States and abroad. This document is not a report of the National Research Council or of the National Academies of Sciences. The opinions expressed in reports highlighted in TRB's Transportation Research E-Newsletter are those of the authors and do not necessarily reflect the views of the Transportation Research Board or the National Academies of Sciences, Engineering, and Medicine.