Pedestrian crashes represent about 40% of total fatal crashes in low-income developing countries. Although many pedestrian crashes in these countries occur at unsignalized intersections such as roundabouts, studies focusing on this issue are limited. The objective of this study was to develop safety performance functions for pedestrian crashes at modern roundabouts to identify significant roadway geometric, traffic, and land use characteristics related to pedestrian safety. Detailed data, including various forms of exposure, geometric and traffic characteristics, and spatial factors such as proximity to schools and to drinking establishments were collected from a sample of 22 modern roundabouts in Addis Ababa, Ethiopia, representing about 56% of such roundabouts in Addis Ababa. To account for spatial correlation resulting from multiple observations at a roundabout, both the random effect Poisson (REP) and random effect negative binomial (RENB) regression models were estimated. Model goodness-of-fit statistics revealed a marginally superior fit of the REP model to the data compared with the RENB model. Pedestrian crossing volume and the product of traffic volumes along major and minor roads had significant and positive associations with pedestrian crashes at roundabouts. The presence of a public transport (bus or taxi) terminal beside a roundabout was associated with increased pedestrian crashes. Although the maximum gradient of an approach road was negatively associated with pedestrian safety, the provision of a raised median along an approach appeared to increase pedestrian safety at roundabouts. Remedial measures were identified for combating pedestrian safety problems at roundabouts in the context of a developing country.


    Access

    Download

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Investigating Pedestrian Injury Crashes on Modern Roundabouts in Addis Ababa, Ethiopia


    Additional title:

    Transportation Research Record: Journal of the Transportation Research Board


    Contributors:


    Publication date :

    2019-04-04




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Injury severity of pedestrians involved in road traffic crashes in Addis Ababa, Ethiopia

    Tulu, Getu Segni / Washington, Simon / Haque, Md. Mazharul et al. | Taylor & Francis Verlag | 2017



    Bicycling in Addis Ababa, Ethiopia: Opportunities and challenges

    Getu Segni Tulu / M. Hadgu / A.G. Tarekegn | DOAJ | 2019

    Free access

    Investigating road conditions of crash blackspots in Addis Ababa, Ethiopia: a random parameters negative binomial model

    Ambo, Tefera Bahiru / Ma, Jian / Fu, Chuanyun et al. | Taylor & Francis Verlag | 2024


    Heavy vehicle crashes in Addis Ababa: Relationship between contributing factors and severity of outcomes

    Getu Segni Tulu / Robert Tama Lisinge / Bikila Teklu Wedajo | DOAJ | 2022

    Free access