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Greenbook

The picture on  the left is the 2001 Green Book published by the American Association of State Highway Transportation Officials (AASHTO). The proper name is A Policy on Geometric Design of Highways and Streets. This book is known as the "Greenbook" in the transportation community, and contains a set of national standards for geometric design and construction of all types of roadways from freeways to local roads and streets. The standards were developed for a national audience and portions may not be applicable for every municipality. The "Greenbook" provides information and details about design and construction of the geometry of all roadways.

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