thèse doctorat de l'université bordeaux 2 - ISPED-Enseignement à ...

Khan University (AKU) Campus or at the company offices in separate rooms. Driver-relatedvariables included socio-demographic variables (age, sex, marital status, education, andemployment), whether driving permit was issued without practical test, frequency of reportedrisky driving behaviours (sleepy driving, mobile phone use while driving, seat-belt use, traffictickets, DWI during last three months), and involvement in RTC during last one year.Using 17-inch video screens, five test videos (three from Pakistan and two from Cameroon)were shown to drivers before presenting selected sites. The order of sites was randomly drawnfor each participant. To avoid confusion from right- and left-hand driving practiced inCameroon and Pakistan, site videos from Cameroon followed those from Pakistan. For eachvideo shown, drivers were asked to report their perception of site and traffic, on a four-levelscale; 1) Certainly safe; 2) Probably safe; 3) Probably dangerous; 4) Certainly dangerous(Figure 14). Further, they were asked to record their preferred speed (in km/h) for each site.Each site was characterized by the main investigator, using definitions used in our previousstudy conducted in Cameroon [126]. Site-related variables assessed were built-up or ruralarea, horizontal and vertical road profile, road width, surface regularity, verge slope, depth at10 m from the verge, location and type of nearby obstacles (within a road distance of 50 m ineach direction), horizontal marking, vertical road signs, and presence of an intersection or aU-turn [126]. Traffic-related variables assessed were traffic moving in same or oppositedirection, visible pedestrian, motorcyclist, or heavy vehicle, rain or wet surface, manoeuvringvehicle (crossing or overtaking), and number of lanes [127].49