Variables Description Distribution
Area Area of the road 7 % urban
14 % suburban
79 % rural
Class Road classification 25 % national
25 % regional
50 % collector
Variables Description Mean Std. Dev. Min Max
CityCenter_dist Distance from the nearest city center (km) 59.18 106.8 0 36.17
Delta_modif Duration between the change and the speed record (years) 0.2010 3.6233 -6 6
Side_curb Presence of a side curb (raised) (No=0, Yes=1) 0.0376
Length Length of the site (m) 859.3 898.3 97.07 3702
Limit Speed limit, before or after depending on the period (km/h) 77.86 10.61 50 90
Marking_overtaking Presence of marking for overtaking (No=0, Yes=1) 0.3367
Median_strip Presence of a median strip (No=0, Yes=1) 0.0402
Moment Period of the speed record (Before speed limit change=0, After=1) 0.4673
Nb_speed_limit_sign Number of speed limit signs 1.4070 1.4753 0 5
Nb_sug_speed_sign Number of suggested speed limit signs 0.4422 1.0361 0 4
Paved_shoulder Presence of a paved shoulder (No=0, Yes=1) 0.8567
RMR_dist Distance from the nearest RMR (census metropolitan area) (km) 49.61 107.6 0 361.7
Unpaved_shoulder Presence of an unpaved shoulder (No=0, Yes=1) 0.8744
Year_modif Year of the change in the speed limit 2009 2.251 2006 2013