highly significantp<0.05
The variables Type of intersection (V1, categories “Roundabout with transitional central island” and “Roundabout”), Width of the pavement (V3, category “6–9 m”), Number of traffic lanes for the same direction of traffic (V5), Direction of the traffic (V6, category “Double with median strip”) and Length of the previous straight section (V7, category “>500 m”) all appear highly significant in the regression models of both Curves+Intersections and Intersections (p<0.05 or even p<0.01); whereas they do not for the Curves model.