Road and Transportation Engineering

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Browsing Road and Transportation Engineering by Subject "Addis Ababa City"

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    Assessment on Pedestrian Illegal Crossing and Safety on the Addis Ababa City Ring Road (The case of Winget-Torhayloch-Ayertena Road)
    (AAU, 2018-08) Wondwossen, Getahun; Bikila, Teklu (PhD)
    This research focuses on Addis Ababa Ring Road the road section of Winget-TorhaylochAyertena which have a length of 10 km and consist of eleven pedestrian overpass and seven zebra stripped crossing provided for pedestrian. The research attempts to assess pedestrian crossing behavior, to investigate magnitude of traffic accident resulted due pedestrian illegal crossing, to evaluate the performance of pedestrian overpass provided along the road section and to propose a mitigation measure to reduce the accident on the road section. To meet these objectives detail review of literatures about the subject matter was conducted and relevant data about pedestrian behavior, pedestrian crossing facilities, pedestrian traffic and traffic accident data was collected and investigated through statistical analysis. A traffic accident data of Addis Ababa City and Kolfe Keranio Sub city was collected from the respective Police Commission. Pedestrian traffic count was conducted on the selected pedestrian crossings to analyze performance of pedestrian crossings. Random survey was done for pedestrian to assess their crossing behavior and usage of crossing facilities. This data was collected through questioner and structured interviews. The researcher detected the contributing factor that directed pedestrians for illegal crossing through observation, interview and/or questioners. 300 pedestrians were randomly selected along the section of the ring road. The research analysis shows that Illegal crossing is the major reason for traffic accident in ring road, 75% of the accident occurred on pedestrians and 52% of pedestrian accident resulted while the pedestrian cross the road. The major factor for pedestrian illegal crossing is pedestrian’s improper road crossing behavior. The analysis shows that service level of selected pedestrian overpass in the road section is below a LOS C. From the data the researcher identifies that the basic parameters that affect the performance of Pedestrian overpass were walkway width and location or spacing of overpass. The researcher finally provides a possible counter measures to minimize the accident of pedestrians in the road section. This includes road safety education and promotional campaign for road users to change the attitude of road users toward illegal crossing behavior and enforcement of pedestrian will reduce the number of illegally crossing pedestrian.
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    Parking Demand Analysis and Modeling for Shopping Centers:- A Case Study of Major Shopping Centers in Addis Ababa City
    (Addis Ababa University, 2016-03) Asfaw, Dessie; Bikila, Teklu (PhD)
    In recent years, many commercial centers like shopping centers and malls are under construction in Addis Ababa city. These developments and the rising vehicles population in the city have resulted in growing demand for parking spaces and run into severe multidimensional transportation problems. The study assessed the demand for parking spaces in selected shopping centers through investigative parking utilization indices survey. Findings reveal inadequacy of designated parking facilities. The present study has also made an empirical approach to develop parking demand model through case study of ten important shopping centers and malls in the city by analyzing some quantitative factors affecting the parking demand. The findings suggest that there exists a mathematical model providing linear, positive and most significant relationship between the parking demand and physical properties (explanatory variables) of the shopping centers and malls. Gross floor area, plinth area and existing parking space were identified as the direct influencing variable among the four selected explanatory variables. A verification study was conducted to test the validity of the regression model. The verification has indicated that there is a shortage of proper parking facilities in at least in most of the shopping centers. This finding provides a basis for design consideration if the present pattern of vehicle ownership and other circumstances prevail in the near future. The model developed would help to determine adequate parking demand so that adequate parking spaces can be planned at proper location. Finally, the study recommends a method towards providing adequate parking space is an essential consideration for construction of shopping centers in Addis Ababa city.