U. S. Department of Transportation Research And Innovative Administration
After successive years of decline in the aftermath of the 2001 terrorist attacks, there was a substantial rebound in U.S. international travel in 2004, with most travel categories experiencing growth from 2003. The U.S. outbound travel market grew by 12 percent in 2004 over 2003 totals, with an all time record high number of U.S. visitors (27.4 million) traveling to overseas countries. U.S. residents spent nearly $66 billion on their foreign travel, while foreign residents spent over $74 billion on travel in the United States in 2004. Thus, the U.S. trade balance in travel was positive-almost...
After successive years of decline in the aftermath of the 2001 terrorist attacks, there was a substantial rebound in U.S. international travel in 2004...
The Bureau of Transportation Statistics (BTS) of the Research and Innovative Technology Administration produces the Pocket Guide to Transportation as a compact resource that provides snapshots of the U.S. transportation system and highlights major transportation trends. The Pocket Guide contains a wealth of information divided into five sections: Safety; State of Good Repair; System Use and Livable Communities; Economic Competitiveness; Environmental Sustainability. The Pocket Guide to Transportation supports the BTS mission to create, manage, and share transportation statistical knowledge....
The Bureau of Transportation Statistics (BTS) of the Research and Innovative Technology Administration produces the Pocket Guide to Transportation as ...
U. S. Department of Transportation Federal Highway Administration
Comprehensive highway public-private partnership (PPP) programs are relatively new to the United States and not widely used. Limited highway funds, unmet needs for new highway capacity, interest from private investors, and other factors have led to substantial discussion of PPP projects and programs at the State and Federal levels and implementation of projects in a few leading States. In contrast, some countries have extensive and, in some cases, long-term experience with infrastructure PPPs, particularly highways. This presents a unique opportunity to capitalize on the knowledge and...
Comprehensive highway public-private partnership (PPP) programs are relatively new to the United States and not widely used. Limited highway funds, un...
This report presents the results of a pilot study on the seismic behavior and response of steel bridges with integral abutments. Analytical investigations were conducted on computational models of steel bridges with integral abutments to determine their seismic behavior as a system and to develop seismic design guidelines. The effect of the superstructure flexibility due to inadequate embedment length was investigated using 3D finite element models. This flexibility, modeled as translational and rotational springs, proved to have significant effect on the overall bridge dynamic...
This report presents the results of a pilot study on the seismic behavior and response of steel bridges with integral abutments. Analytical investigat...
The American Association of State Highway and Transportation Officials (AASHTO) LRFD 2002 Bridge Design Specifications contain serviceability deflection criteria perceived to control excess bridge vibrations and structural deterioration. Results of past research efforts indicate that the current AASHTO serviceability deflection criteria is inadequate in controlling excess bridge vibration and structural deterioration. These past studies also state that bridge vibration is better controlled by a limit based on a dynamic property of the bridge, such as natural frequency (Barth, Bergman, Roeder,...
The American Association of State Highway and Transportation Officials (AASHTO) LRFD 2002 Bridge Design Specifications contain serviceability deflecti...
The Bureau of Transportation Statistics (BTS), a part of DOT's Research and Innovative Technology Administration (RITA), presents State Transportation Statistics2010, a statistical profile of transportation in the 50 states and the District of Columbia. This is the eighth annual edition of theState Transportation Statistics, and a companion document to the National Transportation Statistics (NTS), which is updated quarterly on the BTS websi
The Bureau of Transportation Statistics (BTS), a part of DOT's Research and Innovative Technology Administration (RITA), presents State Transportation...
This handbook was created to provide individuals responsible for managing and implementing Traffic Signal, and Freeway Management programs with an understanding of the basic technologies of telecommunications.
This handbook was created to provide individuals responsible for managing and implementing Traffic Signal, and Freeway Management programs with an und...
The Emergency Relief for Federally Owned Roads Program, or ERFO Program, was established to assist Federal agencies with the repair or reconstruction of Federal roads, whichare found to have suffered serious damage by a natural disaster over a wide area or by a catastrophic failure(23CFR668.201).
The Emergency Relief for Federally Owned Roads Program, or ERFO Program, was established to assist Federal agencies with the repair or reconstruction ...
The transportation, urban planning, and public health professions are placing an increased emphasis on walking and bicycling as part of the solution to problems such as traffic congestion, suburban sprawl, and childhood obesity. An interdisciplinary approach from educated professionals is needed to create healthy, sustainable, and livable communities. The Federal Highway Administration (FHWA) University Course on Bicycle and Pedestrian Transportation is one of several resources that can be used to prepare the next generation of professionals for the challenges ahead.
The transportation, urban planning, and public health professions are placing an increased emphasis on walking and bicycling as part of the solution t...