For this technote, the research team collaborated with the Pennsylvania Department of Transportation (PennDOT) to perform the following tasks: Assess the ability of pocket lidar (PL) to perform 3D reconstruction of a trench and the accuracy of that 3D reconstruction. Evaluate the accuracy of derivative metrics extracted from the PL point cloud data
...
Automated vehicle (AV) functionality depends on perceiving and understanding the surrounding roadway environment and infrastructure elements. SAE International® Level 2™ driving automation systems use sensors to perceive the environment and maintain a set headway with lead vehicles while remaining centered in the lane (SAE International, 2020). Alt
...
This report assists public agencies in the inventorying, documenting, and configuring traffic management system (TMS) assets, and illustrates how such information can support the management of these assets. It provides information for agencies to establish and manage their TMS asset inventories. This document addresses key factors in determining wh
...
This report examines emerging data sources applicable to traffic simulation model calibration. The project team categorized these data sources based on publicly accessible datasets and emphasized their potential use for enhancing traffic simulation model calibration. The study evaluates the strengths and limitations of these emerging data sources a
...
United States. Department of Transportation. Federal Highway Administration. Office of Operations
2024-12-01
|
Urban Congestion Report (UCR)
|
PDF
The Urban Congestion Report (UCR) is produced on a quarterly basis and characterizes the most recent traffic congestion and reliability trends at the national and city level. Each quarterly UCR compares data from the most recent three months to the same three months in the previous year.
Driver assistance systems that facilitate economical driving (eco-driving) aim to reduce greenhouse gas emissions and improve vehicle efficiency. These systems reduce idling time at intersections and smooth acceleration and deceleration patterns. Eco-driving has the potential to improve driving comfort by smoothing speed profiles. This study explor
...
United States. Department of Transportation. Federal Highway Administration
2024-12-01
|
PDF
This document provides a summary of Exploratory Advanced Research (EAR) funded research projects; it is a compendium of papers covering the following topics: Mobile Ad Hoc Networks, Digital Twins, Supplementary Materials, Artificial Intelligence (AI), Blockchain, Waste Plastics in Asphalt Binders, Interagency Research.
The Federal Highway Administration's Long-Term Pavement Performance (LTPP) program issues a triannual newsletter to inform you about the progress and activities of the program. Brief updates on progress in important program activities are provided, including data collection, data releases, new products and publications, pooled fund studies, and dat
...
During a full-scale fatigue test program at Lehigh University performed in 2018, the fatigue performance of a prototype orthotropic steel deck (OSD) with extended cut-out (EC) rib-to-floor beam (RFB) connections with partial joint penetration (PJP) welds and reinforcing fillet welds which wrap-around at the weld termination was investigated. The fu
...
United States. Department of Transportation. Federal Highway Administration. Office of Operations
2024-12-01
|
National Travel Time Dashboard: Interstate Highways
|
PDF
The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Ma
...
Extracting information from naturalistic driving datasets is crucial to understanding driver behavior and distractions. To overcome some of the challenges involved with annotating the data, detecting objects and behaviors, and storing large datasets, the researchers set out to develop a robust platform that can automatically estimate driver state,
...
Short-span bridge superstructures are commonly made of precast concrete elements, and those elements are proportioned according to the properties of conventional concrete. The emergence of ultra-high-performance concrete (UHPC), and the release of the AASHTO Guide Specification for Structural Design with UHPC, creates new possibilities for the rede
...
This TechNote covers the research conducted regarding how key features such as vertical alignment is inspected and measured during construction and the challenges and solutions performed properly so that improper placement or damage on the retaining walls - mechanically stabilized earth (MSE) can be detected in a timely manner.
United States. Department of Transportation. Federal Highway Administration
2024-12-01
|
PDF
This report, The U.S. Department of Transportation (USDOT) has prioritized developing technologies that promote traffic safety and improve mobility for all travelers. Supporting that USDOT priority, the Exploratory Advanced Research (EAR) Program of the Federal Highway Administration (FHWA) explores the development of Artificial Intelligence (AI) a
...
Leading by Example: Women Innovators and the Future of Transportation - Innovation Takes Flight: A Conversation with Paula Nouragas - The Women Leading FTA’s Regions - Making Safety Everyone's Business - Forging Ahead with Innovation! - From Bottles to Bridge Sidewalks: Turning Waste into the Next Generation of Concrete - Rumble Strips for the Safe
...
Naturalistic driving data provides a wealth of information for researchers studying driver behavior and distracted driving. However, manually annotating the videos to extract the data is costly and time consuming. This project’s research team set out to develop a system to analyze videos from the second Strategic Highway Research Program Naturalist
...
The reconstruction of the Federal Highway Administration’s (FHWA) third-generation Pavement Testing Facility (PTF-3) provided a unique opportunity to incorporate the geotechnical aspects of pavements within the agency’s accelerated pavement testing program. These geotechnical aspects included various unbound and asphalt-treated base materials to es
...
United States. Department of Transportation. Federal Highway Administration
2024-12-01
|
PDF
A product of the Federal Highway Administration's (FHWAs) Safety Research and Development Program, the Interactive Highway Safety Design Model (IHSDM) is a suite of safety analysis tools to evaluate the safety and operational effects of geometric-design decisions on two-lane rural highways. The following resources are available to individuals consi
...
The use of nondestructive evaluation (NDE) for the condition assessment of bridge decks is growing and has the potential to reduce operating costs and extend lifecycles by fostering cost-effective and timely interventions. Highway agencies recognize that preservation treatments can impact the lifecycle costs of bridges. Several NDE technologies ide
...
This technote summarizes the research conducted to explore the capabilities and limitations of pocket lidar for curb ramp inspections. Specifically, the study focuses on the ability of the pocket lidar to extract slope measurements, which often poses difficulties in reliably obtaining this information.
Links with this icon indicate that you are leaving a Bureau of Transportation
Statistics (BTS)/National Transportation Library (NTL)
Web-based service.
Thank you for visiting.
You are about to access a non-government link outside of
the U.S. Department of Transportation's National
Transportation Library.
Please note: While links to Web sites outside of DOT are
offered for your convenience, when you exit DOT Web sites,
Federal privacy policy and Section 508 of the Rehabilitation
Act (accessibility requirements) no longer apply. In
addition, DOT does not attest to the accuracy, relevance,
timeliness or completeness of information provided by linked
sites. Linking to a Web site does not constitute an
endorsement by DOT of the sponsors of the site or the
products presented on the site. For more information, please
view DOT's Web site linking policy.
To get back to the page you were previously viewing, click
your Cancel button.