Highlights Random parameter negative binomial was suitable for modelling pedestrian crashes. Increased exposure led to high pedestrian crashes. Narrow lanes are associated with the higher likelihood of pedestrian crashes. Mountainous terrain has a negative effect on pedestrian safety. Pedestrians crossing in group were less involved in pedestrian crashes.
Abstract Understanding pedestrian crash causes and contributing factors in developing countries is critically important as they account for about 55% of all traffic crashes. Not surprisingly, considerable attention in the literature has been paid to road traffic crash prediction models and methodologies in developing countries of late. Despite this interest, there are significant challenges confronting safety managers in developing countries. For example, in spite of the prominence of pedestrian crashes occurring on two-way two-lane rural roads, it has proven difficult to develop pedestrian crash prediction models due to a lack of both traffic and pedestrian exposure data. This general lack of available data has further hampered identification of pedestrian crash causes and subsequent estimation of pedestrian safety performance functions. The challenges are similar across developing nations, where little is known about the relationship between pedestrian crashes, traffic flow, and road environment variables on rural two-way roads, and where unique predictor variables may be needed to capture the unique crash risk circumstances. This paper describes pedestrian crash safety performance functions for two-way two-lane rural roads in Ethiopia as a function of traffic flow, pedestrian flows, and road geometry characteristics. In particular, random parameter negative binomial model was used to investigate pedestrian crashes. The models and their interpretations make important contributions to road crash analysis and prevention in developing countries. They also assist in the identification of the contributing factors to pedestrian crashes, with the intent to identify potential design and operational improvements.
Investigation of pedestrian crashes on two-way two-lane rural roads in Ethiopia
Accident Analysis and Prevention ; 78 ; 118-126
2015-02-15
9 pages
Article (Journal)
Electronic Resource
English
Investigation of pedestrian crashes on two-way two-lane rural roads in Ethiopia
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