The Transportation Research Board is a division of the United States National Research Council, which serves as an independent adviser to the President of the United States of America, the Congress and federal agencies on scientific and technical questions of national importance. The US. National Research Council is jointly administered by the National Academy of Sciences, the National Academy of Engineering, and the Institute of Medicine. The mission of the Transportation Research Board —one of six major divisions of the National Research Council— is to promote innovation and progress in transportation through research. In an objective and interdisciplinary setting, the Board facilitates the sharing of information on transportation practice and policy by researchers and practitioners; stimulates research and offers research management services that promote technical excellence; provides expert advice on transportation policy and programs; and disseminates research results broadly and encourages their implementation.ActivitiesTRB fulfills this mission through the work of its more than 200 standing committees and task forces addressing all modes and aspects of transportation; publication and dissemination of reports and peer-reviewed technical papers on research findings; management of cooperative research and other research programs; conduct of special studies on transportation policy issues at the request of the U.S. Congress and government agencies; operation of an on-line computerized file of transportation research information; and the hosting of an annual meeting that typically attracts 12,000 transportation professionals from throughout the United States and abroad.