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The Sustainability topic includes policies, programs, resources and case studies related to achieving sustainable transportation systems, projects, and programs. Transportation agencies increasingly are working to implement a “triple bottom line” approach to sustainability by evaluating performance on the basis of economic, social, and environmental impacts.

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Featured Case Study

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    Arizona DOT’s Sustainable Transportation Program has implemented solutions such as this roundabout and other features on US 89.

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AASHTO (American Association of State Highway and Transportation Officials)
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