Paul St-Aubin edited section_Methodology_subsection_Site_Selection__.tex  almost 9 years ago

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\subsection{Site Selection}  Roundabout data for Québec was taken from a related road safety project \cite{St_Aubin_2013}. The pool of data covers roughly 20\% of Québec's 110 roundabouts (at the time of study) with uniform representation of various  land use, geometric design, and regional representation. characteristics.  In Sweden, four roundabouts were selected to complement the existing Québec data. These roundabouts were selected on the basis of similarity in geometric design and land use with typical Québec roundabouts. This typical design is characterised by a single lane (on the approach, exit, and ring, each), an approach speed limit of 50 km/h, an outside radius of 15-25 meters, very-low to medium urban density, suburban or commercial land use, moderate visibility over the centre island, and pedestrian crosswalks. Québec roundabout signalisation design is functionally identical to Swedish design, though differs in aesthetics. The Swedish roundabouts chosen were all located in the Skåne province, near the city of Lund.