A key step toward ensuring the desired long-term performance of pavements in roadways is effective compaction. The limitations of conventional compaction techniques and current density-based acceptance practice in highway construction have led to non-uniform and unsatisfactory compaction of the pavement materials. Intelligent Compaction (IC) techno
...
In this project we explore and develop a new damage detection and identification approach suitable for elastic structure which is built upon piezoelectric active interrogation and intelligent data analytics. Novel sensor designs have been accomplished to effectively extract the impedance information of the underlying structure, the change of which
...
The deterioration of infrastructure presents a major challenge for the economy of any country. Additionally, the risk factor of possible loss of life has made Structural Health Monitoring (SHM) an important approach to evaluate the status of any civil infrastructure. Among different methods, Fiber Optics Sensors have shown great potential to comple
...
The primary focus of our research is to address the challenge of evaluating aging concrete bridges, both reinforced and prestressed, located in New England. We have developed a remote radar sensor capable of characterizing corroded reinforced concrete structures, as well as a predictive capability to generate artificial cracks and simulate radar im
...
Long-haul passenger, commuter, and freight railroads are essential to maintaining a thriving economy, especially in New England, with its many urban areas, industries, and significant national defense activities. Amtrak's Northeast Corridor (NEC) is the busiest passenger rail corridor in the United States (US). The US Department of Transportation a
...
Aggregates, through internal friction, must transmit the wheel loads to the underlying layers and also be resistant to abrasion and polishing due to traffic. Aggregates are subject to crushing and abrasive wear during manufacturing, placing, and compacting hot mix asphalt concrete (HMAC), and, therefore, must be hard and tough to resist degradation
...
Texas Department of Transportation (TxDOT) engineers are responsible for the design, evaluation, and implementation of Intelligent Transportation System (ITS) solutions across the entire state. These installations occur with vast differences in requirements, expectations, and constraints. Many deployments require some type of communication system t
...
This report summarizes the Year 1 activities under implementation project 5-4969-01, Wireline Intelligent Transportation Systems (ITS) Communications Training. The overall objective of the project is to modify the workshop offerings developed in a previous project to an 8-hour format and teach the workshop materials at 10 locations across the state
...
This report summarizes the Year 2 activities under Implementation Project 5-4969-01, “Wireline ITS Communications Training.” The overall objectives of the project were to modify the workshop offerings developed in a previous project to an eight-hour format and teach the workshop materials at 10 locations across the state, including a pilot workshop
...
Limited capital investment for major transportation improvements and growth in metropolitan areas require the most efficient use of the existing transportation system. Provisions of the Clean Air Act Amendments and TEA21 further intensify these concerns. One means to improve mobility is high-occupancy vehicle (HOV) lanes. Although HOV lanes have be
...
This report is a summary of the first year of a three-year study that will permit a comprehensive assessment of the high-occupancy vehicle (HOV) lanes currently operating in the Dallas area. Since various types of HOV lanes are being phased into operation in the Dallas region, several design and operational issues have yet to be resolved, and area
...
Limited capital investment for major transportation improvements and growth in metropolitan areas require the most efficient use of the existing transportation system. Provisions of the Clean Air Act Amendments and TEA21 further intensify these concerns. One means to improve mobility is high-occupancy vehicle (HOV) lanes. Although HOV lanes have be
...
This project focused on the evaluation of the feasibility of using crushed portland cement concrete (CPCC) materials in Texas Department of Transportation applications. Special interest was given to the use of CPCC fines passing the No. 4 sieve. The research approach for exploring potential applications was divided into two ways as follows: paving
...
In partnership with Arconic and Embraer, the Federal Aviation Administration (FAA) is assessing emerging metallic structures technologies (EMST) using the FAA’s Full-Scale Aircraft Structural Test Evaluation and Research (FASTER) facility. In this collaborative effort, full-scale fuselage panel test data will be obtained to assess the effect of EMS
...
In partnership with Arconic and Embraer, the Federal Aviation Administration (FAA) is assessing emerging metallic structures technologies (EMST) using the FAA’s Full-Scale Aircraft Structural Test Evaluation and Research (FASTER) facility. In this collaborative effort, full-scale fuselage panel test data will be obtained to assess the effect of EMS
...
Many older bridges were designed for much lighter loads than are required today, and engineering calculations based on current codes show that these bridges are at risk for posting, closure or replacement. However, many of these structures show few or no signs of distress and provide adequate service. This raises the obvious question: even if a bri
...
What changes to policies and procedures at the California Department of Transportation (Caltrans) would increase transfers of agency-owned excess land to California Native American Tribes and groups negatively impacted by freeway development? Using case studies on LandBack and reparations and qualitative research with Caltrans staff and community a
...
In partnership with Arconic and Embraer, the Federal Aviation Administration (FAA) is assessing emerging metallic structures technologies (EMST) using the FAA’s Full-Scale Aircraft Structural Test Evaluation and Research (FASTER) facility. In this collaborative effort, full-scale fuselage panel test data will be obtained to assess the effect of EMS
...
In partnership with Arconic and Embraer, the Federal Aviation Administration (FAA) is assessing emerging metallic structures technologies (EMST) using the FAA’s Full-Scale Aircraft Structural Test Evaluation and Research (FASTER) facility. In this collaborative effort, full-scale fuselage panel test data will be obtained to assess the effect of EMS
...
In partnership with Arconic and Embraer, the Federal Aviation Administration (FAA) is assessing emerging metallic structures technologies (EMST) using the FAA’s Full-Scale Aircraft Structural Test Evaluation and Research (FASTER) facility. In this collaborative effort, full-scale fuselage panel test data will be obtained to assess the effect of EMS
...
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.
United States Department of Transportation
Zhang, Yang
