Artificial Intelligence (AI) is revolutionizing every walk of life, allowing machines to learn from experience, adapt, and perform tasks that have historically required human cognition. The US government elevated AI as one of its key priority science and technology areas. In response, the ITS JPO established research in AI as a priority area to acc
...
Vasudevan, M., Townsend, H., Dang, T. N., O'Hara, A., Burnier, C., & Ozbay, K. (2020). Identifying Real-World Transportation Applications Using Artificial Intelligence (AI): Summary of Potential Application of AI in Transportation (Report No. FHWA-JPO-20-787). United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office. https://rosap.ntl.bts.gov/view/dot/50651
Vasudevan, Meenakshy, Haley Townsend, Thao Nhi Dang, Amy O'Hara, Carolina Burnier, and Kaan Ozbay. Identifying Real-World Transportation Applications Using Artificial Intelligence (AI): Summary of Potential Application of AI in Transportation. Report no. FHWA-JPO-20-787. United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office, 2020. https://rosap.ntl.bts.gov/view/dot/50651.
Vasudevan, Meenakshy, et al. Identifying Real-World Transportation Applications Using Artificial Intelligence (AI): Summary of Potential Application of AI in Transportation. United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office, 2020, Report no. FHWA-JPO-20-787, ROSA P. https://rosap.ntl.bts.gov/view/dot/50651.
State Departments of Transportation (DOTs) are continually assessing and choosing materials or technologies to meet their transportation needs. As part of this assessment, DOTs are turning to Environmental Product Declarations (EPDs) to quantify the environmental impacts associated with those products.
Harvey, J., Meijer, J., Ram, P., & Smith, K. (2020). Environmental Product Declarations: Communicating Environmental Impact for Transportation Products [techbrief] (Report No. FHWA-HIF-19-087). United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements. https://rosap.ntl.bts.gov/view/dot/50667
Harvey, John, Joep Meijer, Prashant Ram, and Kurt Smith. Environmental Product Declarations: Communicating Environmental Impact for Transportation Products [techbrief]. Report no. FHWA-HIF-19-087. United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements, 2020. https://rosap.ntl.bts.gov/view/dot/50667.
Harvey, John, et al. Environmental Product Declarations: Communicating Environmental Impact for Transportation Products [techbrief]. United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements, 2020, Report no. FHWA-HIF-19-087, ROSA P. https://rosap.ntl.bts.gov/view/dot/50667.
United States. Department of Transportation. Federal Highway Administration
2020-07-01
|
PDF
Optimistic about dielectric profiling systems' (DPS') effectiveness in improving pavement performance and assessing compaction for acceptance, the Minnesota Department of Transportation is leading efforts to develop and fine-tune the technology. DPS use a ground-penetrating radar (GPR) to assess the density of hot-mix asphalt, a key indicator for p
...
United States. Department of Transportation. Federal Highway Administration (2020). Spotlight on Pavement Density: Minnesota Department of Transportation - Status of Dielectric Profiling Systems in Minnesota (Report No. FHWA-HIF-21-041). United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/77880
United States. Department of Transportation. Federal Highway Administration. Spotlight on Pavement Density: Minnesota Department of Transportation - Status of Dielectric Profiling Systems in Minnesota. Report no. FHWA-HIF-21-041. United States. Department of Transportation. Federal Highway Administration, 2020. https://rosap.ntl.bts.gov/view/dot/77880.
United States. Department of Transportation. Federal Highway Administration Spotlight on Pavement Density: Minnesota Department of Transportation - Status of Dielectric Profiling Systems in Minnesota. United States. Department of Transportation. Federal Highway Administration, 2020, Report no. FHWA-HIF-21-041, ROSA P. https://rosap.ntl.bts.gov/view/dot/77880.
United States. Department of Transportation. Federal Highway Administration. Office of Operations
2020-07-01
|
PDF
The Federal Highway Administration 2019 Urban Congestion Report details trends and the current state of congestion and reliability on the National Highway System (NHS) in 52 of the largest metropolitan areas in the United States. This report also includes examples of agencies using the National Performance Management Research Data Set (NPMRDS) for
...
United States. Department of Transportation. Federal Highway Administration. Office of Operations (2020). 2019 Urban Congestion Trends: Leveraging Data to Improve Operations Performance (Report No. FHWA-HOP-20-012). United States. Department of Transportation. Federal Highway Administration. Office of Operations. https://rosap.ntl.bts.gov/view/dot/55715
United States. Department of Transportation. Federal Highway Administration. Office of Operations. 2019 Urban Congestion Trends: Leveraging Data to Improve Operations Performance. Report no. FHWA-HOP-20-012. United States. Department of Transportation. Federal Highway Administration. Office of Operations, 2020. https://rosap.ntl.bts.gov/view/dot/55715.
United States. Department of Transportation. Federal Highway Administration. Office of Operations 2019 Urban Congestion Trends: Leveraging Data to Improve Operations Performance. United States. Department of Transportation. Federal Highway Administration. Office of Operations, 2020, Report no. FHWA-HOP-20-012, ROSA P. https://rosap.ntl.bts.gov/view/dot/55715.
United States. Federal Highway Administration. Center for Accelerating Innovation
2020-07-01
|
PDF
Innovator, published by the FHWA Center for Accelerating Innovation, advances implementation of innovative technologies and processes in the highway industry. Its audience is transportation professionals in highway agencies, trade and research groups, academia and the private sector, and the driving public.
United States. Federal Highway Administration. Center for Accelerating Innovation (2020). Innovator - July/August 2020 - Volume 14, Issue 79. United States. Federal Highway Administration. Center for Accelerating Innovation. https://rosap.ntl.bts.gov/view/dot/55570
United States. Federal Highway Administration. Center for Accelerating Innovation. Innovator - July/August 2020 - Volume 14, Issue 79. United States. Federal Highway Administration. Center for Accelerating Innovation, 2020. https://rosap.ntl.bts.gov/view/dot/55570.
United States. Federal Highway Administration. Center for Accelerating Innovation Innovator - July/August 2020 - Volume 14, Issue 79. United States. Federal Highway Administration. Center for Accelerating Innovation, 2020, ROSA P. https://rosap.ntl.bts.gov/view/dot/55570.
Successes in Stewardship is a Federal Highway Administration (FHWA) bimonthly newsletter highlighting current best practices in stewardship and environmental review from around the country.
United States. Federal Highway Administration (2020). Successes in Stewardship - Back to the Basics: Section 4(f) & 23 CFR 774 Updates. United States. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/54800
United States. Federal Highway Administration. Successes in Stewardship - Back to the Basics: Section 4(f) & 23 CFR 774 Updates. United States. Federal Highway Administration, 2020. https://rosap.ntl.bts.gov/view/dot/54800.
United States. Federal Highway Administration Successes in Stewardship - Back to the Basics: Section 4(f) & 23 CFR 774 Updates. United States. Federal Highway Administration, 2020, ROSA P. https://rosap.ntl.bts.gov/view/dot/54800.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2020-07-01
|
PDF
Traffic Volume Trends is a monthly report based on hourly traffic count data reported by the States. These data are collected at approximately 5,000 continuous traffic counting locations nationwide and are used to estimate the percent change in traffic for the current month compared with the same month in the previous year. Estimates are re-adjuste
...
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information (2020). Traffic Volume Trends: July 2020. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. https://rosap.ntl.bts.gov/view/dot/54801
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. Traffic Volume Trends: July 2020. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2020. https://rosap.ntl.bts.gov/view/dot/54801.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information Traffic Volume Trends: July 2020. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2020, ROSA P. https://rosap.ntl.bts.gov/view/dot/54801.
United States. Department of Transportation. Federal Highway Administration
2020-07-01
|
PDF
Encouraged by strong results from field-testing its two dielectric profiling systems (DPS), the Ohio Department of Transportation (ODOT) began exploring ways to incorporate the technology further into its pavement program workflow and quality assurance specifications. DPS use a ground-penetrating radar (GPR) to determine the density of hot-mix asph
...
United States. Department of Transportation. Federal Highway Administration (2020). Spotlight on Pavement Density: Ohio Department of Transportation - Status of Dielectric Profiling Systems in Ohio (Report No. FHWA-HIF-21-029). United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/77884
United States. Department of Transportation. Federal Highway Administration. Spotlight on Pavement Density: Ohio Department of Transportation - Status of Dielectric Profiling Systems in Ohio. Report no. FHWA-HIF-21-029. United States. Department of Transportation. Federal Highway Administration, 2020. https://rosap.ntl.bts.gov/view/dot/77884.
United States. Department of Transportation. Federal Highway Administration Spotlight on Pavement Density: Ohio Department of Transportation - Status of Dielectric Profiling Systems in Ohio. United States. Department of Transportation. Federal Highway Administration, 2020, Report no. FHWA-HIF-21-029, ROSA P. https://rosap.ntl.bts.gov/view/dot/77884.
United States. Department of Transportation. Federal Highway Administration
2020-07-01
|
PDF
The New York State Department of Transportation (NYSDOT) has shifted its attention with the dielectric profiling system (DPS) from trialing the technology to incorporating the tool into pavement project acceptance. The DPS uses a ground penetrating radar to assess asphalt compaction, which is a common acceptance quality characteristic for asphalt p
...
United States. Department of Transportation. Federal Highway Administration (2020). Spotlight on Pavement Density: New York State Department of Transportation - Next Steps with the Dielectric Profiling System (Report No. FHWA-HIF-24-065). United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/77882
United States. Department of Transportation. Federal Highway Administration. Spotlight on Pavement Density: New York State Department of Transportation - Next Steps with the Dielectric Profiling System. Report no. FHWA-HIF-24-065. United States. Department of Transportation. Federal Highway Administration, 2020. https://rosap.ntl.bts.gov/view/dot/77882.
United States. Department of Transportation. Federal Highway Administration Spotlight on Pavement Density: New York State Department of Transportation - Next Steps with the Dielectric Profiling System. United States. Department of Transportation. Federal Highway Administration, 2020, Report no. FHWA-HIF-24-065, ROSA P. https://rosap.ntl.bts.gov/view/dot/77882.
The GIS in Transportation team publishes quarterly newsletters to share information about significant geospatial transportation news, events, and applications. Each issue highlights a specific transportation agency's application of GIS or geospatial data and technology.
Federal Highway Administration (U.S.) GIS in Transportation: July 2020. Federal Highway Administration (U.S.), 2020, ROSA P. https://rosap.ntl.bts.gov/view/dot/53877.
United States. Department of Transportation. Federal Highway Administration
2020-07-01
|
PDF
The Ohio Department of Transportation (ODOT) purchased its first dielectric profiling system (DPS) unit in late 2018 with the goal of achieving better representations of the quality of newly laid asphalt than through its existing practice of obtaining sample cores. ODOT hoped the DPS unit would better identify the variability noticed from core samp
...
United States. Department of Transportation. Federal Highway Administration (2020). Spotlight on Pavement Density: Ohio Department of Transportation - Starting Out with Dielectric Profiling Systems (Report No. FHWA-HIF-21-028). United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/77883
United States. Department of Transportation. Federal Highway Administration. Spotlight on Pavement Density: Ohio Department of Transportation - Starting Out with Dielectric Profiling Systems. Report no. FHWA-HIF-21-028. United States. Department of Transportation. Federal Highway Administration, 2020. https://rosap.ntl.bts.gov/view/dot/77883.
United States. Department of Transportation. Federal Highway Administration Spotlight on Pavement Density: Ohio Department of Transportation - Starting Out with Dielectric Profiling Systems. United States. Department of Transportation. Federal Highway Administration, 2020, Report no. FHWA-HIF-21-028, ROSA P. https://rosap.ntl.bts.gov/view/dot/77883.
United States. Department of Transportation. Federal Highway Administration
2020-07-01
|
PDF
The North Carolina Department of Transportation (NCDOT) borrowed a Laser Texture Scanner (LTS) from the Federal Highway Administration (FHWA) Mobile Asphalt Technology Center (MATC) Equipment Loan Program in late 2021. The NCDOT Materials and Tests Unit’s Data Collection and Investigations section had initially planned simply to practice with the t
...
United States. Department of Transportation. Federal Highway Administration (2020). Spotlight on Pavement Safety: North Carolina Department of Transportation - Experience with the Laser Texture Scanner (LTS) (Report No. FHWA-HIF-24-009). United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/77901
United States. Department of Transportation. Federal Highway Administration. Spotlight on Pavement Safety: North Carolina Department of Transportation - Experience with the Laser Texture Scanner (LTS). Report no. FHWA-HIF-24-009. United States. Department of Transportation. Federal Highway Administration, 2020. https://rosap.ntl.bts.gov/view/dot/77901.
United States. Department of Transportation. Federal Highway Administration Spotlight on Pavement Safety: North Carolina Department of Transportation - Experience with the Laser Texture Scanner (LTS). United States. Department of Transportation. Federal Highway Administration, 2020, Report no. FHWA-HIF-24-009, ROSA P. https://rosap.ntl.bts.gov/view/dot/77901.
United States. Federal Highway Administration. Office of Planning, Environment, and Realty
2020-07-01
|
PDF
The use of CSS to achieve CSD outcomes is referred to as Context Sensitive Solutions and Design (CSS/D). The information below provides additional details and the timeline shown on the right sidebar highlights some recent CSS/D milestones and resources.
United States. Federal Highway Administration. Office of Planning, Environment, and Realty (2020). Context Sensitive Solutions and Design [fact sheet]. United States. Federal Highway Administration. Office of Planning, Environment, and Realty. https://rosap.ntl.bts.gov/view/dot/55909
United States. Federal Highway Administration. Office of Planning, Environment, and Realty. Context Sensitive Solutions and Design [fact sheet]. United States. Federal Highway Administration. Office of Planning, Environment, and Realty, 2020. https://rosap.ntl.bts.gov/view/dot/55909.
United States. Federal Highway Administration. Office of Planning, Environment, and Realty Context Sensitive Solutions and Design [fact sheet]. United States. Federal Highway Administration. Office of Planning, Environment, and Realty, 2020, ROSA P. https://rosap.ntl.bts.gov/view/dot/55909.
United States. Federal Highway Administration. Office of Natural Environment
2020-07-01
|
PDF
This brief newsletter each month keeps transportation stakeholders up-to-date on various issues related to transportation and climate change.
United States. Federal Highway Administration. Office of Natural Environment (2020). Air Quality and Sustainable Transportation Highlights: July/August 2020 (Report No. FHWA-HEP-20-041). United States. Department of Transportation. Federal Highway Administration. Office of Natural Environment. https://rosap.ntl.bts.gov/view/dot/54796
United States. Federal Highway Administration. Office of Natural Environment. Air Quality and Sustainable Transportation Highlights: July/August 2020. Report no. FHWA-HEP-20-041. United States. Department of Transportation. Federal Highway Administration. Office of Natural Environment, 2020. https://rosap.ntl.bts.gov/view/dot/54796.
United States. Federal Highway Administration. Office of Natural Environment Air Quality and Sustainable Transportation Highlights: July/August 2020. United States. Department of Transportation. Federal Highway Administration. Office of Natural Environment, 2020, Report no. FHWA-HEP-20-041, ROSA P. https://rosap.ntl.bts.gov/view/dot/54796.
This report provides a framework that can be used to develop an evaluation of technology applications designed to remove barriers to transportation for people with visual, hearing, cognitive, and mobility disabilities. The framework helps evaluation teams follow a consistent process that starts with an understanding of 1) the goals of the technolog
...
Caspi, A., Hallenbeck, M. E., & Tyman, S. (2020). Accessible Transportation Technologies Research Initiative (ATTRI) Performance Metrics and Evaluation, Final Evaluation Framework Report (Report No. FHWA-JPO-20-784). United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office. https://rosap.ntl.bts.gov/view/dot/50748
Caspi, Anat, Mark E Hallenbeck, and Shannon Tyman. Accessible Transportation Technologies Research Initiative (ATTRI) Performance Metrics and Evaluation, Final Evaluation Framework Report. Report no. FHWA-JPO-20-784. United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office, 2020. https://rosap.ntl.bts.gov/view/dot/50748.
Caspi, Anat, et al. Accessible Transportation Technologies Research Initiative (ATTRI) Performance Metrics and Evaluation, Final Evaluation Framework Report. United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office, 2020, Report no. FHWA-JPO-20-784, ROSA P. https://rosap.ntl.bts.gov/view/dot/50748.
United States. Department of Transportation. Federal Highway Administration
2020-07-01
|
PDF
Highway agencies seeking a more viable way to check the quality of asphalt construction than through sample cores are considering dielectric profiling systems (DPS) as a solution. DPS use a ground-penetrating radar (GPR) to collect dielectric values from the underlying surface that help measure air voids or nonuniformity of newly laid hot-mix aspha
...
United States. Department of Transportation. Federal Highway Administration (2020). Spotlight on Pavement Density: Use of Dielectric Profiling Systems for Asphalt Density (Report No. FHWA-HIF-21-027). United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/77878
United States. Department of Transportation. Federal Highway Administration. Spotlight on Pavement Density: Use of Dielectric Profiling Systems for Asphalt Density. Report no. FHWA-HIF-21-027. United States. Department of Transportation. Federal Highway Administration, 2020. https://rosap.ntl.bts.gov/view/dot/77878.
United States. Department of Transportation. Federal Highway Administration Spotlight on Pavement Density: Use of Dielectric Profiling Systems for Asphalt Density. United States. Department of Transportation. Federal Highway Administration, 2020, Report no. FHWA-HIF-21-027, ROSA P. https://rosap.ntl.bts.gov/view/dot/77878.
High friction surface treatment (HFST) is a safety-first pavement treatment intended to restore and maintain pavement friction to reduce crashes. The cost of HFST is high compared to typical maintenance treatments; however, HFST is highly effective at reducing wet-weather and run-off road crashes. Improvement in the state of the practice can promot
...
Wilson, B., Wang, K. C. P., Li, J. Q., & Yang, G. (2020). Recommendations Report for High Friction Surface Treatments: Candidate Sites, Materials, and Construction (Report No. FHWA-SA-20-036). United States. Department of Transportation. Federal Highway Administration. Office of Safety. https://rosap.ntl.bts.gov/view/dot/58033
Wilson, Bryan, Kelvin C. P. Wang, Joshua Q. Li, and Guangwei Yang. Recommendations Report for High Friction Surface Treatments: Candidate Sites, Materials, and Construction. Report no. FHWA-SA-20-036. United States. Department of Transportation. Federal Highway Administration. Office of Safety, 2020. https://rosap.ntl.bts.gov/view/dot/58033.
Wilson, Bryan, et al. Recommendations Report for High Friction Surface Treatments: Candidate Sites, Materials, and Construction. United States. Department of Transportation. Federal Highway Administration. Office of Safety, 2020, Report no. FHWA-SA-20-036, ROSA P. https://rosap.ntl.bts.gov/view/dot/58033.
The Iowa Department of Transportation (DOT) used a hybrid approach to incorporate building information modeling (BIM) into the contract documents for the I-80/I-380 Systems Interchange Project in eastern Iowa (Figure 1). The project started in August 2018 and is scheduled to be completed in December 2022. The I-80/I-380 Systems Interchange Project
...
Turkan, Y. (2020). Hybrid Approach to BIM in Iowa: BIM as Part of the Construction Contract (Report No. FHWA-HIF-20-084). United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/92259
Turkan, Yelda. Hybrid Approach to BIM in Iowa: BIM as Part of the Construction Contract. Report no. FHWA-HIF-20-084. United States. Department of Transportation. Federal Highway Administration, 2020. https://rosap.ntl.bts.gov/view/dot/92259.
Turkan, Yelda Hybrid Approach to BIM in Iowa: BIM as Part of the Construction Contract. United States. Department of Transportation. Federal Highway Administration, 2020, Report no. FHWA-HIF-20-084, ROSA P. https://rosap.ntl.bts.gov/view/dot/92259.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2020-06-28
|
PDF
The Weekly Traffic Volume Report estimates the vehicle miles traveled (VMT) for interstate highways and how the total travel measured by VMT compares with travel that occurred in the same week of the previous year. The VMT is further split into passenger vehicle and truck components. The information gives new insights into the effect on traffic by
...
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information (2020). Special Issue - Weekly Traffic Volume Report: Interstate Travel for Week No. 26. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. https://rosap.ntl.bts.gov/view/dot/50631
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. Special Issue - Weekly Traffic Volume Report: Interstate Travel for Week No. 26. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2020. https://rosap.ntl.bts.gov/view/dot/50631.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information Special Issue - Weekly Traffic Volume Report: Interstate Travel for Week No. 26. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2020, ROSA P. https://rosap.ntl.bts.gov/view/dot/50631.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2020-06-26
|
PDF
The Weekly Gasoline Product Supplied Report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Adminis
...
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information (2020). Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 39. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. https://rosap.ntl.bts.gov/view/dot/50614
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 39. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2020. https://rosap.ntl.bts.gov/view/dot/50614.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 39. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2020, ROSA P. https://rosap.ntl.bts.gov/view/dot/50614.
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.