The Transportation Research Thesaurus provides a common, structured vocabulary for indexing and retrieving transportation research documents. Managed by the Transportation Research Board, it covers all modes of transport and related disciplines. Planners and academics use it to ensure consistent terminology when searching databases, preventing missed data due to synonyms or regional jargon.
I couldn't find the old pavement studies until I used the exact TRT terms for the search query.
When searching federal databases, entering the exact TRT term instead of a colloquial phrase will drastically improve your hit rate for technical papers.
Related terms
USDOT
The United States Department of Transportation, the federal agency regulating interstate travel and commerce.
Datex2
A European standard for exchanging traffic data between management centers.
Intelligent transportation system
The application of sensing, analysis and communication technologies to surface transportation networks.