-
Federal
Collection Long-Term Pavement Performance (LTPP)
Department of Transportation —
Long-term Pavement performance, construction, traffic, and environmental data for more than 2500 pavement sections in the United States and Canada. More than a dozen... -
Federal
Collection Congestion Mitigation and Air Quality (CMAQ)
Department of Transportation —
All 50 states and the District of Columbia submit annual reports of their CMAQ project obligations in March of every year. The FHWA uses these yearly submissions to...