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Quantification of the effect of road features on driving speed

Interdisciplinary research project (SVI 2018 / 001) on the effect of road design on perception and speed selection of motorists.

Compliance with speed limits is a key factor for road safety. The design of the roads and its perception by motorists is of decisive importance in this context.

Against this background, the planned research project pursues the following objectives:

  • Identification of the design elements of the Swiss road desing that most effectively influence the speed selection for different road types.
  • Quantification of the influence of the design elements used in Switzerland on speed selection in urban areas for defined road types up to a speed limit of 80 km/h by means of speed measurements in the field.
  • Quantification of the influence of not yet existing design elements on speed selection in urban areas for defined road types by means of a VR driving simulator experiment.

The toolbox to be developed on this basis helps planners to select suitable measures to redesign roads in such a way that a sustainable reduction in the speeds driven and a stabilization of the traffic flow can be achieved.

Project Dates

Lead and Team Prof. Dr. Dorothea Schaffner (project lead research team FHNW; co-project lead total project)
Kaspar Kaufmann
Philipp Wyss
Collaboration School of Architecture, Civil Engineering and Geomatics: Prof. Dr. Alexander Erath (co-project lead overall project); Michael Van Eggermond
School of Engineering: Prof. Dr. Simon Schubiger; Madlaina Kalunder
Rapp Trans: Yves Gasser, Nina Schweizer
Funding Federal Roads Office FEDRO
Duration August 2019 - July 2021


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