The Transportation Research Board (TRB), a division of the National Academies of Sciences, Engineering, and Medicine, is a premier organization dedicated to mobilizing expertise to solve complex transportation challenges, focusing on areas like resilient infrastructure, transformational technology, and public safety. Established in 1920 as the "National Advisory Board on Highway Research" and later adopting its current name in 1974, TRB has expanded its focus from highways to comprehensive multi-modal transport.

Annually, it engages over 8,000 volunteer experts through nearly 200 technical committees and hosts its influential Annual Meeting in Washington D.C., drawing approximately 14,000 professionals globally each January. TRB publishes extensive research, including peer-reviewed papers in the Transportation Research Record, consensus studies requested by Congress, and maintains critical databases like TRID, guiding advancements in the field. Though its work is often requested and funded by Congress and federal agencies, TRB operates without direct federal appropriations, relying on support from state transportation departments, the U.S. Department of Transportation, and industry partners to ensure its objective research.