Spiral Transition Curves

Elias C. Tonias and Constantine N. Tonias
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Elias C. Tonias: Tonias Engineers
Constantine N. Tonias: The CEDRA Corporation

Chapter 9 in Geometric Procedures for Civil Engineers, 2016, pp 243-302 from Springer

Abstract: Abstract As an automobile travels along a straight stretch of a highway, or as a train speeds along a long straight pair of rails, or as a bicyclist or motorcyclist for that matter does the same, they all occasionally have to turn left or right. We all know that as that happens, the body that travels along such a straight course at high speeds builds a centrifugal force that pushes the body away from its path when the path has to veer to the left or right. The higher the speed and the higher the body’s mass, the higher the centrifugal force. To compensate for this force, a cyclist leans left or right in the direction of the turn. Since an automobile or train cannot lean in such a manner, the engineers and contractors elevate one end of the travel path to induce such a tilt to the traveling vehicle.

Keywords: Main Spirals; Sets IERR; Procedure Subroutine; Circular Curve; Back Tangent (search for similar items in EconPapers)
Date: 2016
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DOI: 10.1007/978-3-319-24295-8_9

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