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Pages 1-3

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From page 1...
... • Many of the research topics found in the assembled body of knowledge were not directly investigating the characteristics of a particular geometric design element; rather, common topics were traffic control devices, access management techniques, or other treatments that had a relationship with one or more design elements, and the research investigated what effects, if any, the design had on the treatment, or vice-versa. • A growing trend is research that attempts to quantify the safety effects of geometric design elements.
From page 2...
... TRB's Transportation Research Information System (TRIS) , the Transport online database, and the TRB online publications catalog were all used to identify potential sources from papers and reports published during the previous decade.
From page 3...
... The research also produced two FHWA Informational Guides on roundabouts and contributed to other guides on access management, pedestrian and bicycle accommodation, designing for older drivers, the Highway Capacity Manual, and the Highway Safety Manual. Discussion of the relationship between this synthesis report and other documents, along with relevant cross references, is also provided.


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