http://ir.bdu.edu.et/handle/123456789/10240 2001-01-13T05:52:19Z http://ir.bdu.edu.et/handle/123456789/16644 The Effect of Headlight Glare on Driving: The Case on the Bahir Dar - Gondar Road Temesgen, worku This thesis investigates the effect of headlight glare on driving Case on BahirDar to Gondar Road in Ethiopia. The study aims to examine the frequency and severity of headlight glare experienced by drivers, identify its impact on driving behavior and collisions, and explore potential solutions to address this safety issue. Data was collected through a survey of 385 drivers, capturing information on their experiences with headlight glare, the effects of glare on driving, causes of collisions, and training in low-light driving and headlight adjustment. The findings reveal that a majority of drivers (60%) experienced headlight glare, with temporary blindness being the most common effect. Headlight glare was reported as a significant contributor to collisions by 40% of participants. Moreover, most drivers (69.6%) had not received any formal training on low-light driving or headlight adjustment. The study highlights the need to reduce headlight glare on the BahirDar to Gondar Road and suggests potential solutions such as better road lighting, driver education, and enforcement of headlight regulations. The analysis of relationships between variables and demographic factors provides insights into the effectiveness of different strategies to reduce headlight glare and improve driving safety. The study also conducts field data analysis, examining the impact of headlight glare on driving performance by considering factors such as illumination levels, discomfort glare, and discomfort glare rating among different vehicle types. The results underscore the variability of discomfort glare levels influenced by factors such as vehicle type, distance, and angle. These findings contribute to the existing knowledge on road safety and provide a basis for developing targeted interventions to mitigate headlight glare effects. The study concludes by discussing the implications for driving safety, suggesting potential solutions, highlighting limitations, and recommending further research to address the gaps in knowledge. 2023-07-01T00:00:00Z http://ir.bdu.edu.et/handle/123456789/16643 Analysis of Road Traffic Crashes and Identification of Black Spot Locations in Ethiopia (A Case Study: Woreta to Nefas Mewucha Road) Bezawit, Belete Road traffic crashes are fundamental problems being faced by societies that resulted in loss of life, injuries to human body and financial losses to the local and national economy. And caused by different factors related with road and environmental factors, vehicle characteristics and road users. The objective of this study was to analyze road traffic crashes and to determine the road traffic crash black spot’s location using Mixed Crash Frequency-Crash Rate and Quantum Geographic Information System along Woreta – Nefas Mewucha Road. In addition, the study aims to identify risk factors of road traffic crashes by undertaking Road Safety Audit. Ten-year police reported road traffic crash were collected from police stations along the road to analyze the crash along the route. It was found that there was an average growth rates of the fatal crashes 16.9%. Road users those in the age group of 18-30, are the victims of most traffic crashes. 70% of them are men. Passengers account for 48% of affected road users. Black spot locations were identified using Kernel Density estimation method using different band width. Google Earth and Google Street map were used to place crash locations. Around stations 42,43, 41,44,45,60,81,7,30,46,67, and 75 respectively were found to be the first ten black spot locations. Safety audit was conducted to analyze existing road safety issues along the route. Lack of pedestrian protection, restricted visibility of road, pavement marking problem, pavement distress, lack of traffic control devices and bad drivers driving behavior are some of the causes for traffic crash in this research. Finally, remedial measures were identified on possible interventions to improve road safety in the Amhara Region in general and in the study area in particular. Key words: Road traffic crashes, Black spots, Risk factors 2024-02-01T00:00:00Z http://ir.bdu.edu.et/handle/123456789/16642 GRAVITY-BASED ASSESSMENT AND MODELING OF ACCESSIBILITY: A CASE STUDY BAHIR DAR CITY EXCEPT SATELLITE CITIES ANEMUT, TEWABE KEBEDE In developing countries, rapid urbanization and sprawling require authorities to assess the sustainability and development of the cities from different perspectives so that they can develop a solution for policy and decision-making. The research proposes gravitybased accessibility measures to figure out the influencing factors and for the categorization of cities` subdivisions from the perspectives of urban land use and transport road network. GIS and statistical software programs-based is used in the methodology. The research follows a quantitative approach for sustainable and balanced urban development. Basically, the methodology involves four steps: first, primary and secondary data collection, which are land use data, population data, road network data and shop data. Second, integrating required data into ArcGIS to obtain land use proportion, critical center point, shortest O-D distance, road network length, and intersection density. Third, analyzing accessibility within the study area using an existing gravity-based model for each kebele and for each significant land use type. Lastly, modeling accessibility by incorporating influencing factors into a gravity-based model. A multiple regression analysis was conducted to verify the statistical and theoretical significance of the proposed variables during modeling. The result revealed that when a kebele hosts diverse land-use (availability of almost all land use types), its accessibility becomes very high. Most kebeles around the periphery have lower accessibility performance, and unless special attention is given, their impact on the downtown becomes greater to fulfill their needs. An average accessibility score, which is the average of all available significant land-use types accessibility value within a kebele, can express a kebele`s performance when any significant land use type does not exist within a kebele in the study area. This can consider a user’s opportunity to access the neighborhood. A total accessibility score, which is the summation of all available significant land-use types accessibility value within a kebele, can show a kebele`s land use diversification, relative location from the center, and land use development. Key words: Average accessibility score, GIS, Gravity-based, Urban land-use, Multiple regression, Transport road network, Total accessibility score 2024-09-01T00:00:00Z http://ir.bdu.edu.et/handle/123456789/16094 Impact of Bajaj on Capacity Performance of Intersections in Bahir Dar City Tigist, Asmamaw Baye In order to improve the performance of intersections in urban areas by offering suitable solutions for the problems found, performance evaluation of intersections is important for design, operations, and planning purposes in traffic management. In order to evaluate the effectiveness of chosen roundabouts and signalized intersections in Bahir Dar, this thesis analyzed capacity performance of intersections using SIDRA INTERSECTION 8.0 program. To identify trends in the performance of intersections in relation to changes in vehicle compositions, the analysis was conducted every 15 minutes over a range of 1-hour consecutive time series. Based on the intersection’s capacity, saturation level, delay, and LOS, and queue length, capacity performance evaluated. Intersections analysis was carried out using an analytical methodology; to determine the LOS, traffic and geometric data were collected for the chosen intersections and analyzed using the SIDRA Software package. The results of the SIDRA software's capacity analysis show that the selected intersections' approaches are providing service closer to and above capacity during peak period traffic flows and have a degree of saturation greater than 0.85, which is the recommended value by HCM. Due to the high values of degree of saturation, delay, and queue length, traffic flow operations at the intersections were unstable. The study's findings indicated that the analyzed intersections have poor performance, and the chosen roundabout and signalized crossings' current conditions need to be improved. The functioning of the intersections in Bahir Dar city had improved as a result of the removal of Bajaj vehicles. When Bajaj’s were removed during rush hour, the average delay in Subatamit approach of New bus station intersection decreased by 228.9second per car and queue vehicle length and distance reduced by 25car and 172.7m respectively, for Ajip intersection average delay decreased by 41.4 sec/veh, for Papyrus roundabout Giorgis approach showed a reduction of average delay of 24min/veh, for Dipo intersection a reduction of average delay of 10min/veh was found. As a result, the performance of signalized and unsignalized intersections is negatively influenced by the traffic mix of three-wheelers. 2024-01-01T00:00:00Z