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DARTE V2 provides a 38-year, high-resolution inventory of annual carbon dioxide emissions from road vehicles across the contiguous United States. The dataset models emissions from 1980 to 2017 using roadway-level traffic data and state-specific factors for multiple vehicle types. NASA compiled this continuous 1-km grid surface from the Database of Road Transportation Emissions.
License is listed as 'other-license-specified'; users must investigate specific terms. The 2026 update date on Data.gov may be a metadata error, as the data itself ends in 2017.