Effects of the Distance Between Speed Humps and Pedestrian Crossings on Gap Acceptance Behavior of Pedestrians (In the case of Tor hailoch to Bethel Road)

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Addis Ababa University


Vehicles increase in numbers on a daily basis. In spite of the fact that they offer an improved convenience, they also have brought about negative effects. For instance, losses of lives and properties are considered as one of the major consequences. In relation to this, pedestrian crossings are critical places for road accidents involving pedestrians and motor vehicles. Due to the relation between speed and severe injury the driver's speed has a crucial impact on pedestrian safety. To this end, controlling the speed of vehicles on various roads and streets is crucial in order to maintain the safety of people and to prevent any possibility of injury or death. Nowadays, in the city of Addis Ababa, speed humps are becoming a common physical measure installed near pedestrian crossings to reduce vehicle speeds to improve the safety and mobility of pedestrians at the crossing. Taking in to account the practiced possible measures in reduction of the speed of vehicle, their familiarization with pedestrians' safety and comfort shall also be assessed properly. This thesis contains the detailed assessment and evaluation of the effectiveness of speed humps near crossings, along Tor Hailoch to Bethel road segment, in the reduction of the vehicle speed and its contribution on the mobility and comfort of pedestrians while crossing the road by categorizing the distance between speed humps and pedestrian crossings into shorter (less than 6m) and longer (more than 6m). In addition, by extracting the data from the total observation, the study also evaluates the mobility and comfort of children and the elderly pedestrians. Interview has also conducted with pedestrians that using both the shorter and the longer distances as found necessary. From the total observation, it is noted that drivers give more way to pedestrians at crossings on the longer distances. In addition, it is noted that the gap acceptance behavior of pedestrians is impacted on the shorter distance sites as more pedestrians are stopped before crossing and change their pace and/or run while crossing. Moreover, it is observed that pedestrians cross comfortably at straight on the longer distances rather than the short distances. The results gained by extracting the children and elders from the total observed data also shows the same effect as the total observations. Notwithstanding with the results found on the road users' behavior, the shorter distance exercises less vehicle speed on pedestrian crossing comparing to the longer distances. In connection, most of the interviewed pedestrians emphasized that they will not be sure whether the driver give them way or not on the shorter distances.



Speed Humps, Pedestrian Crossings, Behavior of Pedestrians