The Federal Highway Administration’s (FHWA) Safety Compass newsletter aims to increase highway safety awareness and to provide resources to the highway safety community to help save lives. The newsletter is published three times a year and includes articles on safety-focused offerings from FHWA, other DOT modes; our State, Local, and Tribal partner
...
United States. Federal Highway Administration (2021). Safety Compass Newsletter [Fall 2021: Volume 15 Issue 3]. United States. Department of Transportation. Federal Highway Administration. Office of Safety. https://rosap.ntl.bts.gov/view/dot/58500
United States. Federal Highway Administration. Safety Compass Newsletter [Fall 2021: Volume 15 Issue 3]. United States. Department of Transportation. Federal Highway Administration. Office of Safety, 2021. https://rosap.ntl.bts.gov/view/dot/58500.
United States. Federal Highway Administration Safety Compass Newsletter [Fall 2021: Volume 15 Issue 3]. United States. Department of Transportation. Federal Highway Administration. Office of Safety, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/58500.
This document is one in a series of technical summaries that accompany the forthcoming Federal Highway Administration report, Collection of Data with Unmanned Aerial Systems (UAS) for Bridge Inspection and Construction Inspection.
Futron Corporation, & VHB/Vanasse Hangen Brustlin, Inc. (2021). Effective Practices for Routine Bridge Inspections Using Unmanned Aerial Systems [techbrief] (Report No. FHWA-HRT-21-083). United States. Federal Highway Administration. Office of Research, Development, and Technology. https://rosap.ntl.bts.gov/view/dot/57958
Futron Corporation and VHB/Vanasse Hangen Brustlin, Inc.. Effective Practices for Routine Bridge Inspections Using Unmanned Aerial Systems [techbrief]. Report no. FHWA-HRT-21-083. United States. Federal Highway Administration. Office of Research, Development, and Technology, 2021. https://rosap.ntl.bts.gov/view/dot/57958.
Futron Corporation, et al. Effective Practices for Routine Bridge Inspections Using Unmanned Aerial Systems [techbrief]. United States. Federal Highway Administration. Office of Research, Development, and Technology, 2021, Report no. FHWA-HRT-21-083, ROSA P. https://rosap.ntl.bts.gov/view/dot/57958.
This case study presents a safety analysis conducted by the Wisconsin Department of Transportation (WisDOT) at the intersection of State Highway 75 (WIS 75) and Plank Road (County Road A) in Racine County, WI. WisDOT proactively identified key safety needs early in the project development process and used a data-driven approach to evaluate the safe
...
Hamilton, I. (2021). WIS 75 Intersection Screening & Project Development Process (Report No. FHWA-SA-21-074). United States. Department of Transportation. Federal Highway Administration. Office of Safety. https://rosap.ntl.bts.gov/view/dot/63018
Hamilton, Ian. WIS 75 Intersection Screening & Project Development Process. Report no. FHWA-SA-21-074. United States. Department of Transportation. Federal Highway Administration. Office of Safety, 2021. https://rosap.ntl.bts.gov/view/dot/63018.
Hamilton, Ian WIS 75 Intersection Screening & Project Development Process. United States. Department of Transportation. Federal Highway Administration. Office of Safety, 2021, Report no. FHWA-SA-21-074, ROSA P. https://rosap.ntl.bts.gov/view/dot/63018.
This report summarizes proceedings of a virtual peer exchange sponsored by the Federal Highway Administration (FHWA) and hosted by the Association of Metropolitan Planning Organizations (AMPO) on June 22–23, 2021. The purpose of the peer exchange was to discuss how metropolitan planning organizations (MPOs) can build MPO capacity for using geograph
...
Cahill, P., & Green, M. (2021). GIS and Equity Peer Exchange: A TPCB Peer Exchange Event (Report No. FHWA-HEP-21-047;DOT-VNTSC-FHWA-21-09). United States. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/59252
Cahill, Patricia and Michael Green. GIS and Equity Peer Exchange: A TPCB Peer Exchange Event. Report no. FHWA-HEP-21-047;DOT-VNTSC-FHWA-21-09. United States. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/59252.
Cahill, Patricia, and Michael Green GIS and Equity Peer Exchange: A TPCB Peer Exchange Event. United States. Federal Highway Administration, 2021, Report no. FHWA-HEP-21-047;DOT-VNTSC-FHWA-21-09, ROSA P. https://rosap.ntl.bts.gov/view/dot/59252.
United States. Department of Transportation. Federal Highway Administration
2021-09-01
|
PDF
Although several factors can influence the performance of an asphalt pavement, one of the most important is in-place density. A small increase in density can potentially lead to a significant increase in service life of asphalt. Highway agencies use specifications to achieve acceptable in-place density on their asphalt pavements. Density acceptance
...
United States. Department of Transportation. Federal Highway Administration (2021). Enhanced In-Place Density: Example Approaches to Obtain Acceptable In-Place Density. United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/56222
United States. Department of Transportation. Federal Highway Administration. Enhanced In-Place Density: Example Approaches to Obtain Acceptable In-Place Density. United States. Department of Transportation. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/56222.
United States. Department of Transportation. Federal Highway Administration Enhanced In-Place Density: Example Approaches to Obtain Acceptable In-Place Density. United States. Department of Transportation. Federal Highway Administration, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/56222.
This technical manual describes the Federal Highway Administration’s Traffic Noise Model (TNM) Version 3.1. Chapter 2 describes the process of determining noise emissions and levels at a reference location 15 m (50 ft) from the traffic noise source. This includes: the geometric discretizing of the study in the horizontal plane into elemental triang
...
Hastings, A. L. (2021). Traffic Noise Model 3.1 - Technical Manual (Report No. FHWA-HEP-21-041). United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/80951
Hastings, Aaron L.. Traffic Noise Model 3.1 - Technical Manual. Report no. FHWA-HEP-21-041. United States. Department of Transportation. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/80951.
Hastings, Aaron L. Traffic Noise Model 3.1 - Technical Manual. United States. Department of Transportation. Federal Highway Administration, 2021, Report no. FHWA-HEP-21-041, ROSA P. https://rosap.ntl.bts.gov/view/dot/80951.
CARMASM is an initiative to enable collaboration for research and development of cooperative driving automation (CDA). The goal of CDA is to improve safety, traffic throughput, and energy efficiency of the transportation network by enabling vehicles and the infrastructure to communicate to coordinate movement. This project aims to advance the CARMA
...
Soleimaniamiri, S., Li, X. (., Yao, H., Ghiasi, A., Vadakpat, G., Bujanovic, P., Lochrane, T., Stark, J., Blizzard, K., Hale, D., & Racha, S. (2021). Cooperative Automation Research: CARMA Proof-of-Concept Transportation System Management and Operations Use Case 2 (Report No. FHWA-HRT-21-069). United States. Federal Highway Administration. Office of Operations Research and Development. https://rosap.ntl.bts.gov/view/dot/58020
Soleimaniamiri, Saeid, Xiaopeng (Shaw) Li, Handong Yao, Amir Ghiasi, Govind Vadakpat, Pavle Bujanovic, and Taylor Lochrane, et al.. Cooperative Automation Research: CARMA Proof-of-Concept Transportation System Management and Operations Use Case 2. Report no. FHWA-HRT-21-069. United States. Federal Highway Administration. Office of Operations Research and Development, 2021. https://rosap.ntl.bts.gov/view/dot/58020.
Soleimaniamiri, Saeid, et al. Cooperative Automation Research: CARMA Proof-of-Concept Transportation System Management and Operations Use Case 2. United States. Federal Highway Administration. Office of Operations Research and Development, 2021, Report no. FHWA-HRT-21-069, ROSA P. https://rosap.ntl.bts.gov/view/dot/58020.
Cooperative driving automation (CDA) aims to improve the safety, traffic throughput, and energy efficiency of the transportation network by allowing vehicles and infrastructure to work together to coordinate movement. The objective of this project is to advance the CARMASM ecosystem to enable further capabilities for CDA participants to interact wi
...
Soleimaniamiri, S., Li, X. (., Yao, H., Ghiasi, A., Vadakpat, G., Bujanovic, P., Lochrane, T., Stark, J., Hale, D., & Racha, S. (2021). Cooperative Automation Research: CARMA Proof-of-Concept Transportation System Management and Operations Use Case 4 - Dynamic Lane Assignment (Report No. FHWA-HRT-21-068). United States. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/58024
Soleimaniamiri, Saeid, Xiaopeng (Shaw) Li, Handong Yao, Amir Ghiasi, Govind Vadakpat, Pavle Bujanovic, Taylor Lochrane, John Stark, David Hale, and Sujith Racha. Cooperative Automation Research: CARMA Proof-of-Concept Transportation System Management and Operations Use Case 4 - Dynamic Lane Assignment. Report no. FHWA-HRT-21-068. United States. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/58024.
Soleimaniamiri, Saeid, et al. Cooperative Automation Research: CARMA Proof-of-Concept Transportation System Management and Operations Use Case 4 - Dynamic Lane Assignment. United States. Federal Highway Administration, 2021, Report no. FHWA-HRT-21-068, ROSA P. https://rosap.ntl.bts.gov/view/dot/58024.
Connected and automated vehicle (CAV) technologies offer potentially transformative societal impacts, including significant mobility, safety, and environmental benefits. Traffic analysis, modeling, and simulation (AMS) tools provide an efficient means to evaluate transportation improvement projects before deployment. However, current AMS tools are
...
Huang, Z., Hale, D. K., Shladover, S. E., Lu, X. Y., Liu, H., Li, Q., Li, X., Mahmassani, H., Talebpour, A., Hosseini, M., & Elfar, A. (2021). Developing Analysis, Modeling, and Simulation Tools for Connected and Automated Vehicle Applications (Report No. FHWA-HRT-21-077). United States. Federal Highway Administration. Office of Operations Research and Development. https://rosap.ntl.bts.gov/view/dot/57956
Huang, Zhitong, David K. Hale, Steven E. Shladover, Xiao-Yun Lu, Hao Liu, Qianwen Li, and Xiaopeng Li, et al.. Developing Analysis, Modeling, and Simulation Tools for Connected and Automated Vehicle Applications. Report no. FHWA-HRT-21-077. United States. Federal Highway Administration. Office of Operations Research and Development, 2021. https://rosap.ntl.bts.gov/view/dot/57956.
Huang, Zhitong, et al. Developing Analysis, Modeling, and Simulation Tools for Connected and Automated Vehicle Applications. United States. Federal Highway Administration. Office of Operations Research and Development, 2021, Report no. FHWA-HRT-21-077, ROSA P. https://rosap.ntl.bts.gov/view/dot/57956.
United States. Department of Transportation. Federal Highway Administration. Office of Safety
2021-09-01
|
PDF
The Pedestrian and Bike Forum newsletter provides information to FHWA stakeholders on reducing the number of pedestrian- and bicycle-related highway fatalities and serious injuries. Topics include updates on FHWA programs, spotlights on State and local noteworthy practices, initiatives with partner organizations, and upcoming events. It is publishe
...
United States. Department of Transportation. Federal Highway Administration. Office of Safety (2021). Pedestrian and Bike Forum Newsletter [Volume 82, Fall 2021]. United States. Department of Transportation. Federal Highway Administration. Office of Safety. https://rosap.ntl.bts.gov/view/dot/62448
United States. Department of Transportation. Federal Highway Administration. Office of Safety. Pedestrian and Bike Forum Newsletter [Volume 82, Fall 2021]. United States. Department of Transportation. Federal Highway Administration. Office of Safety, 2021. https://rosap.ntl.bts.gov/view/dot/62448.
United States. Department of Transportation. Federal Highway Administration. Office of Safety Pedestrian and Bike Forum Newsletter [Volume 82, Fall 2021]. United States. Department of Transportation. Federal Highway Administration. Office of Safety, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/62448.
Every Day Counts (EDC) is the Federal Highway Administration’s (FHWA’s) program to advance a culture of innovation in the transportation community in partnership with public and private stakeholders. Through this State-based effort, FHWA coordinates rapid deployment of proven strategies and technologies to shorten the project delivery process, enha
...
United States. Federal Highway Administration (2021). Every Day Counts: Innovation for a Nation on the Move - EDC-6 Progress Report #1, September 2021 (Report No. FHWA-21-CAI-023). United States. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/58314
United States. Federal Highway Administration. Every Day Counts: Innovation for a Nation on the Move - EDC-6 Progress Report #1, September 2021. Report no. FHWA-21-CAI-023. United States. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/58314.
United States. Federal Highway Administration Every Day Counts: Innovation for a Nation on the Move - EDC-6 Progress Report #1, September 2021. United States. Federal Highway Administration, 2021, Report no. FHWA-21-CAI-023, ROSA P. https://rosap.ntl.bts.gov/view/dot/58314.
This brief summarizes an evaluation of how the Federal Highway Administration’s (FHWA’s) investment in eNEPA, an electronic tool, has affected interagency collaboration in developing environmental documents and conducting environmental reviews for major projects under the National Environmental Policy Act (NEPA).
Filosa, G. (2021). FHWA Research and Technology Evaluation TechBrief: eNEPA (Report No. FHWA-HRT-21-092). United States. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/57953
Filosa, Gina. FHWA Research and Technology Evaluation TechBrief: eNEPA. Report no. FHWA-HRT-21-092. United States. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/57953.
Filosa, Gina FHWA Research and Technology Evaluation TechBrief: eNEPA. United States. Federal Highway Administration, 2021, Report no. FHWA-HRT-21-092, ROSA P. https://rosap.ntl.bts.gov/view/dot/57953.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2021-09-01
|
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 (2021). Traffic Volume Trends: September 2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. https://rosap.ntl.bts.gov/view/dot/58968
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. Traffic Volume Trends: September 2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021. https://rosap.ntl.bts.gov/view/dot/58968.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information Traffic Volume Trends: September 2021. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/58968.
This TechBrief summarizes the planning, conduct, and outcomes of the Federal Highway Administration’s (FHWA’s) Long-Term Pavement Performance (LTPP) program Data Analysis Workshop. FHWA conducted a multiday virtual workshop in November 2020 to gather input from subject matter experts to update the LTPP Data Analysis Plan. Formerly known as the Stra
...
Wiser, L. (2021). Long-Term Pavement Performance Data Analysis Plan [techbrief] (Report No. FHWA-HRT-21-088). United States. Federal Highway Administration. Office of Research, Development, and Technology. https://rosap.ntl.bts.gov/view/dot/57954
Wiser, Larry. Long-Term Pavement Performance Data Analysis Plan [techbrief]. Report no. FHWA-HRT-21-088. United States. Federal Highway Administration. Office of Research, Development, and Technology, 2021. https://rosap.ntl.bts.gov/view/dot/57954.
Wiser, Larry Long-Term Pavement Performance Data Analysis Plan [techbrief]. United States. Federal Highway Administration. Office of Research, Development, and Technology, 2021, Report no. FHWA-HRT-21-088, ROSA P. https://rosap.ntl.bts.gov/view/dot/57954.
This Technical Brief provides an overview of the binder parameter Delta Tc (ΔTc). Delta Tc is an indicator of the effect of aging and additives on the asphalt rheology. More specifically, ΔTc provides insight into the relaxation properties of an asphalt binder that can contribute to non-load related cracking or other age-related embrittlement distr
...
Baumgardner, G. (2021). Delta Tc Binder Specification Parameter [tech brief] (Report No. FHWA-HIF-21-042). United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements. https://rosap.ntl.bts.gov/view/dot/58313
Baumgardner, Gaylon. Delta Tc Binder Specification Parameter [tech brief]. Report no. FHWA-HIF-21-042. United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements, 2021. https://rosap.ntl.bts.gov/view/dot/58313.
Baumgardner, Gaylon Delta Tc Binder Specification Parameter [tech brief]. United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements, 2021, Report no. FHWA-HIF-21-042, ROSA P. https://rosap.ntl.bts.gov/view/dot/58313.
The Federal Highway Administration and Traffic Analysis and Simulation Pooled Fund Study sponsored a research project on multiresolution modeling (MRM). The project's goal was to develop consistent definitions and a unified modeling framework for transportation professionals to help them better understand the opportunities and challenges associated
...
Zhou, X., Hadi, M., & Hale, D. K. (2021). Multiresolution Modeling for Traffic Analysis: State-of-Practice and Gap Analysis Report (Report No. FHWA-HRT-21-082). United States. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/57957
Zhou, Xuesong, Mohammad Hadi, and David K. Hale. Multiresolution Modeling for Traffic Analysis: State-of-Practice and Gap Analysis Report. Report no. FHWA-HRT-21-082. United States. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/57957.
Zhou, Xuesong, et al. Multiresolution Modeling for Traffic Analysis: State-of-Practice and Gap Analysis Report. United States. Federal Highway Administration, 2021, Report no. FHWA-HRT-21-082, ROSA P. https://rosap.ntl.bts.gov/view/dot/57957.
The Federal Highway Administration's (FHWA's) Fostering Multimodal Connectivity Newsletter is intended to provide transportation professionals with real-world examples of ways that multimodal transportation investments promote economic revitalization, provide access to jobs, and achieve safer communities through support of accelerated project deliv
...
United States. Federal Highway Administration (2021). FHWA's Fostering Multimodal Connectivity Newsletter - Fall 2021 (Report No. FHWA-HEP-21-026). United States. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/58169
United States. Federal Highway Administration. FHWA's Fostering Multimodal Connectivity Newsletter - Fall 2021. Report no. FHWA-HEP-21-026. United States. Federal Highway Administration, 2021. https://rosap.ntl.bts.gov/view/dot/58169.
United States. Federal Highway Administration FHWA's Fostering Multimodal Connectivity Newsletter - Fall 2021. United States. Federal Highway Administration, 2021, Report no. FHWA-HEP-21-026, ROSA P. https://rosap.ntl.bts.gov/view/dot/58169.
This report presents a summary of the 2020 Traffic Incident Management Capability Maturity Self-Assessments (TIM CM SA) completed by transportation personnel from 99 locations across the country between September and December, 2020. Forty-one scored questions in the TIM CM SA are grouped into three sections: Strategic, Tactical, and Support. The TI
...
Brewster, R., & Delich, L. (2021). 2020 Traffic Incident Management Capability Maturity Self-Assessment National Analysis Report (Report No. FHWA-HOP-21-022). United States. Department of Transportation. Federal Highway Administration. Office of Operations. https://rosap.ntl.bts.gov/view/dot/62631
Brewster, Rebecca and Lauren Delich. 2020 Traffic Incident Management Capability Maturity Self-Assessment National Analysis Report. Report no. FHWA-HOP-21-022. United States. Department of Transportation. Federal Highway Administration. Office of Operations, 2021. https://rosap.ntl.bts.gov/view/dot/62631.
Brewster, Rebecca, and Lauren Delich 2020 Traffic Incident Management Capability Maturity Self-Assessment National Analysis Report. United States. Department of Transportation. Federal Highway Administration. Office of Operations, 2021, Report no. FHWA-HOP-21-022, ROSA P. https://rosap.ntl.bts.gov/view/dot/62631.
CARMA℠: Boosting Safety, Efficiency, and Reliability on the Nation’s Highways; Nature-Based Solutions for Coastal Highway Resilience; Confronting the Storm: Arizona’s Innovative Dust Detection and Warning System; Safety on Ice; Bolstering the Safety of America’s Bridges for Half a Century; Rehabilitating the Historic Arlington Memorial Bridge.
Lochrane, T., Vadakpat, G., Paladeau, N., Buckingham, K., Torossian, J., Coventry, T., Duby, K., Larsen, A., Connor, B., Hartmann, J., & Sinclair, S. (2021). Public Roads, Vol 85 No. 3 (Autumn 2021) (Report No. FHWA-HRT-22-001). United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology. https://rosap.ntl.bts.gov/view/dot/67988
Lochrane, Taylor, Govind Vadakpat, Nicole Paladeau, Katherine Buckingham, Jessica Torossian, Tony Coventry, and Kevin Duby, et al.. Public Roads, Vol 85 No. 3 (Autumn 2021). Report no. FHWA-HRT-22-001. United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology, 2021. https://rosap.ntl.bts.gov/view/dot/67988.
Lochrane, Taylor, et al. Public Roads, Vol 85 No. 3 (Autumn 2021). United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology, 2021, Report no. FHWA-HRT-22-001, ROSA P. https://rosap.ntl.bts.gov/view/dot/67988.
The use of passive data from location-based smartphone applications (LBS) and Global Positioning Services (GPS) to collect Annual Average Daily Traffic (AADT) has the potential to greatly reduce costs to State Department of Transportations (DOTs) and Metropolitan Planning Organizations (MPOs) and expand the coverage of up-to-date counts. This repor
...
Schewel, L., Co, S., Willoughby, C., Yan, L., Clarke, N., & Wergin, J. (2021). Guidelines for Obtaining AADT Estimates from Non-Traditional Sources (Report No. FHWA-PL-21-031). United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information. https://rosap.ntl.bts.gov/view/dot/64898
Schewel, Laura, Sean Co, Christy Willoughby, Louis Yan, Nancy Clarke, and Jon Wergin. Guidelines for Obtaining AADT Estimates from Non-Traditional Sources. Report no. FHWA-PL-21-031. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021. https://rosap.ntl.bts.gov/view/dot/64898.
Schewel, Laura, et al. Guidelines for Obtaining AADT Estimates from Non-Traditional Sources. United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information, 2021, Report no. FHWA-PL-21-031, ROSA P. https://rosap.ntl.bts.gov/view/dot/64898.
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.