Did you know
Did you know...
Did you know...
The Transportation Research Thesaurus (TRT) is a resource of preferred (and non-preferred) terms in the transportation field, to promote consistent labelling of concepts or ideas.
The New Jersey Department of Transportation (NJDOT) Research Library offers valuable assistance in supporting various research tasks and for accessing resources. This article highlights recent publications from the American Association of State Highway and Transportation Officials (AASHTO), as well as publications indexed in the TRID database. For a background on AASHTO standards and the TRID database, please see our earlier “Did You Know?” article.
Two recent AASHTO publications of note are a print version of the 11th edition of the Manual on Uniform Traffic Control Devices for Streets and Highways (MUTCD) and the 2024 edition of AASHTO’s “Materials Standards” (published electronically).
The 11th edition of the MUTCD was published by the Federal Highway Administration (FHWA) in December 2023 and is available as a free PDF download. It supersedes the previous 10th edition, published in 2009.
The new edition is also available in print format from the NJDOT Library, indexed and printed by AASHTO, in association with the American Traffic Safety Services Association and the Institute of Transportation Engineers. Users must register for a New Jersey State Library card in order to borrow any materials.
On July 31, AASHTO released the Standard Specifications for Transportation Materials and Methods of Sampling and Testing, and AASHTO Provisional Standards, 44th Edition—2024, commonly referred to as the AASHTO “Materials Standards.” These standards contain specifications, recommended practices, and test methods commonly used in the construction of highway facilities. Provisional standards are also published to allow practitioners to use them early in the research or development phase. In addition to revisions to harmonize industry standards, update technology, and generally improve the standards, the 44th edition includes 15 conversions to dual units and more updates to temperature-measuring devices.
The Materials Standards are available in three files on the Research Library’s SharePoint site. In addition to those standards, the following AASHTO reports and standards, published in 2024, are available to NJDOT employees upon request:
The Research Library has compiled a brief scan of the TRID database search on the reduction of emissions of greenhouse gases and carbon. There is an extraordinary growth in projects underway and recently completed research in transportation, covering a range of policy, planning, environment, materials, construction, multi-modal operations, and vehicle equipment, fuels and technology areas. Selected results from the past 6-12 months, focusing on surface transportation in the United States, are listed here:
Effect of Carbon-Negative Carbon Black on Concrete Properties
https://trid.trb.org/View/2389221
Evaluating Carbon Reduction in Project Selection and Planning
https://trid.trb.org/View/2329694
Shaping Automated Vehicle Behaviors in Mixed Autonomy Traffic to Benefit All Road Users and Reduce Greenhouse Gas Emissions
https://trid.trb.org/View/2350815
Advancing Methods to Evaluate Greenhouse Gas Emissions During Transportation Decision Making and Performance Management
https://trid.trb.org/View/2381725
Shifting Gears to Sustainability: A Deep-Dive into Solar-Powered Bike Pathways
https://trid.trb.org/View/2373992
Advancing Active Transportation Project Evaluation
https://trid.trb.org/View/2313957
Impacts of Remote/Hybrid Work and Remote Services on Activity and Transportation Patterns
https://trid.trb.org
U.S. Department of Transportation. DOT Report to Congress: Decarbonizing U.S. Transportation. July 2024. https://trid.trb.org/View/2404234
Mullin, Megan; Feiock, Richard C; Niemeier, Deb. Climate Planning and Implementation in Metropolitan Transportation Governance. Journal of Planning Education and Research, Volume 44, Issue 1, 2024, pp 28-38. https://trid.trb.org/view/1936743
Jeong, Minseop, Jeehwan Bae, and Gayoung Yoo. “Urban roadside greenery as a carbon sink: Systematic assessment considering understory shrubs and soil respiration.” Science of the Total Environment 927 (2024). https://trid.trb.org/View/2377597
National Academies of Sciences, Engineering, and Medicine. “Considering Greenhouse Gas Emissions and Climate Change in Environmental Reviews: Conduct of Research Report.” (2024). https://trid.trb.org/View/2404015
Kelly, Jarod C., Taemin Kim, Christopher P. Kolodziej, Rakesh K. Iyer, Shashwat Tripathi, Amgad Elgowainy, and Michael Wang. Comprehensive Cradle to Grave Life Cycle Analysis of On-Road Vehicles in the United States Based on GREET. No. 2024-01-2830. SAE Technical Paper, 2024. https://trid.trb.org/View/2367212
Ashtiani, Milad Zokaei, Monica Huang, Meghan C. Lewis, Jordan Palmeri, and Kathrina Simonen. “Greenhouse Gas Emissions Inventory from Roadway Construction: Case Study for the Washington State Department of Transportation.” Transportation Research Record (2024). https://trid.trb.org/View/2352361
Zuzhao Ye, Nanpeng Yu, Ran Wei. Joint planning of charging stations and power systems for heavy-duty drayage trucks, Transportation Research Part D: Transport and Environment, Volume 134, 104320 (2024). https://trid.trb.org/View/2408518
Lopez, Sarah, Lawrence Sutter, R. Douglas Hooton, Thomas Van Dam, Allison Innis, and Kevin Senn. “Breaking Barriers to Low Carbon Concrete Pavements.” Transportation Research Record (2024). https://trid.trb.org/View/2387006
Dugoua, Eugenie; Dumas, Marion. Coordination dynamics between fuel cell and battery technologies in the transition to clean cars. Proceedings of the National Academy of Sciences, Volume 121, Issue 27, 2024, e2318605121. https://trid.trb.org/view/2399820
Jung, Philipp Emanuel; Guenthner, Michael; Walter, Nicolas. Guided Port Injection of Hydrogen as an Approach for Reducing Cylinder-to-Cylinder Deviations in Spark-Ignited H2 Engines – A Numerical Investigation. SAE Technical Paper, 2024. https://trid.trb.org/view/2397724
Wallace, Julian; Mitchell, Robert; Rao, Sandesh; Jones, Kevin; Kramer, Dustin; Wang, Yanyu; Chambon, Paul; Sjovall, Scott; Williams, D. Development of a Hybrid-Electric Medium-HD Demonstrator Vehicle with a Pent-Roof SI Natural Gas Engine. SAE Technical Paper, 2024. https://trid.trb.org/view/2397750
Wine, Jonathan; Ahmad, Zar Nigar; McCarthy, Jr., James; Prikhodko, Vitaly; Pihl, Josh; Tate, Ivan; Bradley, Ryan; Howell, Thomas. On Road vs. Off Road Low Load Cycle Comparison. SAE Technical Paper, 2024. https://trid.trb.org/view/2367799
Please contact the NJDOT research librarian, Eric Schwarz, MLIS, at (609) 963-1898, or email library@dot.nj.gov for assistance in your transportation research, or to customize your searches in TRID and other databases.
In the 1940s, the State Highway Department (predecessor to the New Jersey Department of Transportation) created its first departmental library for transportation information. For the past 80 years, this depository of relevant transportation articles and materials has grown. Today NJDOT’s research library is a part of the Bureau of Research, Innovation & Information Transfer. The library offers employees several research and career development resources and holds a collection of documents of notable histories of transportation in New Jersey.
As a part of the NJDOT’s Lunch and Learn series, on February 22, 2024, Eric Schwarz, NJDOT’s research librarian, gave NJDOT employees an overview of the resources available through the NJDOT Research Library and directed a portion of his talk to “Discoveries in the First Year of the NJDOT’s Digitization Project.” The digitization project is an effort to make past documents, films, and other materials from the NJDOT archive, accessible online. Eric has been instrumental to the digitization project, leveraging resources of the multi-state Transportation Research and Connectivity Pooled Fund Study Digitization Project [TPF-5(442)].
Materials range from historic newspaper articles of The Highway to documentary clips of past infrastructure projects and initiatives. Materials have been selected, catalogued, indexed, processed, and preserved by Eric. The digitized materials are now accessible on the Internet Archive’s page for the NJDOT Research Library and contribute to the overall story of transportation in New Jersey.
Notably, the digitization efforts led to uncovering the names of several NJDOT employees who died while working for the department and its predecessor agencies. Five of these individuals were recognized at the Annual Remembrance Ceremony held in September 2023 with name plaques added to a Memorial Wall maintained by NJDOT at Headquarters. As noted during the Lunch and Learn presentation, additional documentary evidence has been found of persons who lost their lives while on duty as the digitization project has proceeded in recent months.
Eric’s presentation conveyed how the digitization project contains a well-spring of information that may prove of interest to historians and other researchers. Digitized materials like old photographs, maps and videos show the makeup of the highway commission in 1922, the number of miles in the State Highway System in 1925, and the number of women who have served as transportation commissioner. The digitized materials reveal several ways that NJDOT has contributed to safety innovations in transportation, including the implementation of cloverleafs, breakaway signs, center barriers, and the piloting and expansion of Emergency/Safety Service Patrol operations. This and other information about the state’s transportation history was made engaging and interactive through mini-pop quizzes.
In addition to describing the digitization process and lessons learned participating in the pooled funded study, Eric gave an overview of the NJDOT Research Library, including its various services and available resources.
Eric noted reference and research services that can be accessed through the NJDOT Research Library. Employees, as well as other transportation professionals, may access various online resources and databases through the research library. Online databases and other sources include:
The research library also provides professional development tools like exam preparation books that can be lent out for several weeks. These books will help professionals prepare for a range of Civil Service and Professional Exams.
As state employees, NJDOT employees can apply for a State Library card, which must be renewed every two years. This card allows individuals to borrow print materials from the NJDOT research library, as well as the New Jersey State Library
Eric noted that links to several online resources and other information about the NJDOT Research Library can be found on the NJDOT Research Library page including links to the NJ State Library which contains additional transportation-related resources.
In addition to the recording, the Lunch and Learn presentation slides can be found here.
Notable Digitized Materials
At the 2023 NJDOT Research Showcase, New Jersey Transportation Commissioner Diane Gutierrez-Scaccetti “appealed to attendees to advance community-centered transportation and to commit to considering the needs of ALICE (Asset Limited, Income Constrained, Employed) persons when devising research questions and in carrying out their day-to-day activities with the goal of planning, building and maintaining a more safe, equitable and sustainable transportation system.” Gutierrez-Scaccetti has repeatedly said that she “drives with ALICE” in mind, but that ALICE would rather drive by herself. On Jan. 30, 2023, Gutierrez-Scaccetti spoke at the National ALICE Summit on Navigating the ALICE Highway: A Multistate Transportation System by 2030.
In recognition of the Commissioner’s emphasis on getting to better know who ALICE is, the NJDOT Research Library has done a quick research of resources related to the mobility of low-income households and the ALICE project at The United Way. These are included below:
United Way of Northern New Jersey operates the website United for ALICE, which maintains research pages for “partner states” (28 states, including New Jersey, plus the District of Columbia). United Way of Northern New Jersey (then known as United Way of Morris County) released its first ALICE report in 2009.
The October 2023 NCHRP Research Results Digest, Collective and Individual Actions to Envision and Realize the Next Era of America’s Transportation Infrastructure: Phase 1, includes this background on ALICE households: “Economic growth and prosperity have not been spread evenly across the United States. About 13 percent of households earn incomes below the poverty line and an additional 29 percent are considered to be asset-limited, income-constrained, and employed (ALICE)…. The average household spends 16 percent of total expenditures on transportation—the second biggest cost after housing…. Significant numbers of Americans have limited access to health care, education, fresh food, or high-speed Internet.”
In 2018, New Jersey Governor Phil Murphy cited “more than one million [ALICE] families” in New Jersey as the impetus to raise the state’s minimum wage to $15 per hour. In 2024, New Jersey’s minimum wage will surpass $15 for the first time.
A November 2023 article from the journal Social Science & Medicine laments the fact that public health studies have not used ALICE data.
The Mackinac Center for Public Policy takes an opposite tack in its criticism. It issued a 2021 report, An Assessment of ALICE: A Misleading Measure of Poverty. “Unfortunately, United Way’s research on this issue is methodologically flawed, misleading and does not help inform the public or policymakers about how to help these households,” the authors write. The Mackinac Center for Public Policy describes itself as “a nonprofit research and educational institute that advances the principles of free markets and limited government.”
United for ALICE states that it provides “unbiased data that is replicable, easily updated on a regular basis, and sensitive to local context,” and that its published measures provide a better picture of “the number of households that are struggling in each county in a state,” compared with the Federal Poverty Level. United for ALICE’s most recent research methodology report was published in April 2023.
Transportation research on low-income individuals can be found via the TRID and ROSA-P databases.
The following are some relevant articles on the topic, curated by the NJDOT Research Library:
Current research projects into the topic of serving low-income populations include these:
Please contact the NJDOT research librarian, Eric Schwarz, MSLIS, at (609) 963-1898, or email at library@dot.nj.gov for assistance on how to expand your search to projects, or retrieve these or other publications.
The New Jersey Department of Transportation (NJDOT) is committed to equity in transportation at all stages of transportation decisionmaking.
Did you know that the NJDOT Research Library can help practitioners identify sources that will help them meet this goal?
Some recent relevant research on this topic includes:
This is just a small sampling of research on this topic in 2022 and 2023. Check out these search results discoverable through TRID (including current research projects) and Google Scholar. As shown here, links to recent searches can be saved to collaborate and share with colleagues. The links display the scale and breadth of materials that can be easily discovered.
Check out the TRB Library Snap Search (research guide) tool on social equity and underserved populations to learn more about research projects recently completed, ongoing and upcoming and links to other reports and relevant research panels overseeing research.
NJDOT’s Research Library web page includes a “hot topic” link to the “Diversity, Equity and Inclusion” (DEI) topic that can be accessed here: TRID Searches – NJDOT Technology Transfer. Close inspection of the saved TRID search will reveal that a large set of “index terms” (18 items) were used to perform this wide-ranging search; researchers, of course, can narrow their search quickly to a subset of items (e.g., environmental justice, barrier free design, civil rights, etc.)
State of New Jersey employees also have access to research tools, including specialized databases from ProQuest and EBSCO, through the New Jersey State Library. Your State Library card is the key to accessing these resources. Just complete this form to register for a State Library card.
And … did you know that many AASHTO reports and technical manuals are available electronically to NJDOT employees? These reports are available through the NJDOT Research Bureau’s SharePoint site. The State Library’s research guide also lists the availability of print and CD-ROM versions of AASHTO’s “featured/essential” publications.
Please contact the NJDOT research librarian, Eric Schwarz, MLIS, at (609) 963-1898, or email library@dot.nj.gov, for assistance in your transportation research.
Did you know…
Did You Know...
The BTS National Transportation Library maintains a Library Guide devoted to providing various 508 Accessibility Resources. The guide includes several valuable resources including accessibility policies, digital submission checklists for researchers, and recommended training resources. Click here to visit this resource.
Did You Know…
Please contact the research librarian to learn how to access these materials.