Hügelschäffer Egg Curves as Transition Curves in Road Design

  • Maja Petrović University of Belgrade, Faculty of Transport and Traffic Engineering, Belgrade, Serbia
  • Branko Malešević University of Belgrade-School of Electrical Engineering, Belgrade, Serbia
  • Aleksandar Trifunović University of Belgrade, Faculty of Transport and Traffic Engineering, Belgrade, Serbia
  • Dragan Lazarević University of Belgrade, Faculty of Transport and Traffic Engineering, Belgrade, Serbia
  • Mateja Milošević University of Belgrade-School of Electrical Engineering, Belgrade, Serbia
DOI: https://doi.org/10.31075/PIS.69.02.09
Keywords: traffic infrastructure, road design, transition curve, Hügelschäffer egg curve, Pythagorean triples, traffic safety

Abstract

Roads and railways, as the main parts of traffic infrastructure, represent geometrically rigid elements which are hard to adapt to certain kinds of landscapes without making large changes to the terrain itself. Today, thanks to modern technology and a large number of software tools, it is possible to define new geometric curves which are easily adaptable for use as transition curves when designing roads or railways. These transition curves can be formed in such a way to make them fit in with the surrounding landscape or urban environment better, which can improve the aesthetics of the transport system. Furthermore, transition curves provide a smooth and gradual change of curvature, reducing the risk of sudden curvature changes, which can cause discomfort to passengers and create an unsafe situation, such as a loss of vehicle control or a train derailment. Accordingly, in this paper, we define the parameters for generating Hügelschäffer curves as new transition curves between two circular road segments.

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Published
2023-06-24
How to Cite
Petrović, M., Malešević, B., Trifunović, A., Lazarević, D., & Milošević, M. (2023). Hügelschäffer Egg Curves as Transition Curves in Road Design. Journal of Road and Traffic Engineering, 69(2), 41-50. https://doi.org/10.31075/PIS.69.02.09
Issue
Vol 69 No 2 (2023): Journal of Road and Traffic Engineering
Section
Articles

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