Street Geometry and Flows
Author(s): Sandra L. Arlinghaus and John D. Nystuen
Source: Geographical Review, Vol. 81, No. 2, (Apr., 1991), pp. 206-214
Published by: American Geographical Society
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Deadly collisions between vehicles and people or between vehicles are a fact of urban life. A geometric approach to reducing the potential for collisions rests on using the symmetry of the underlying street pattern to sort antagonistic flows into separate channels and on disrupting that symmetry to refine the separation to the level of bicyclist and pedestrian. This disruption is part of a non-Euclidean, hyperbolic street geometry.

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