• Organization: National Aeronautics and Space Administration
• Updated: 2025-07-14

The CODATA Catalog of Roads Data Sets, Version 1 contains 367 entries describing national-level road network data sets for 147 countries and four entries describing global data sets. It was...

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• Organization: National Institute of Standards and Technology
• Updated: 2014-01-01 00:00:00

This site, developed in the Physics Laboratory at NIST, addresses three topics: fundamental physical constants, the International System of Units (SI), which is the modern metric system, and...

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• Organization: National Aeronautics and Space Administration
• Updated: 2025-07-17

The Global Roads Open Access Data Set, Version 1 (gROADSv1) was developed under the auspices of the CODATA Global Roads Data Development Task Group. The data set combines the best available roads...

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