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In Ethiopia there is low car ownership (2 cars to 1,000 people); so walking is the mode choice that has a lion share over other modes. While pedestrians move from place to place, there will be crossing somewhere across the road; in doing so, they have no idea on how to utilize the system to maneuver. In addition, drivers don’t give way to the waiting pedestrians. Furthermore, there is no proper planning for pedestrian crossings. This increases the need for a careful local study which can provide the best solution. The aim of this research is to investigate, and model pedestrian gap acceptance and crossing choice at mid-block road crossings. In line with this, the pedestrian attitudinal survey on factors related to road crossings was also conducted.
To investigate and model pedestrian gap acceptance, a filed survey was applied; which was carried out at four mid-block crosswalk locations in different streets of Bahir Dar city. In a field survey, the pedestrian crossing was videotaped in real traffic conditions and the data was extracted using playback technique using AVS Video Editor Software. The collected extracted data includes pedestrian crossing behavior as well as pedestrian, vehicular and roadway characteristics. Statistical analysis on combined site data results in 5sec and 7.2sec for 50% and 85% pedestrian accepted gap sizes respectively. Whereas, the mean accepted gap size was 8.49sec. MLR model was developed in order to examine the effect of various parameters on pedestrian gap acceptance. It was found that pedestrian safety margin and vehicular arrival rate have a significantly higher effect on the size of gap acceptance. BL regression model was also developed in order to examine various factors on the probability of pedestrian gap acceptance. The results suggested that pedestrian waiting place, vehicular travel lane, crossing initiation and gap size have a significantly higher effect on crossing choice.
An attitudinal survey of a questionnaire was designed aiming to capture key human factors related to crosswalks. The descriptive analysis of the questionnaire responses revealed that most pedestrians prefer crosswalks to minimize accident exposure and to be legal. A PCA was implemented resulting that, crossing outside crosswalk locations increases exposure to an accident. And also, it suggests that illegal behavior of divers like refusal to give way at crosswalks, aggressive and careless behaviors were cause for the accident. |
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