Eshetie, Berhan (PhD)Fitsum, Getachew (Mr.) Co- AdvisorMengistu, Manaye2018-12-172023-11-182018-12-172023-11-182018-07http://etd.aau.edu.et/handle/12345678/15179Currently in Addis Ababa there are so many problems which are mainly concerned with shortage of parking space such as congestion of roads due to imbalance between on-street parking capacity and number of vehicle, emission of to the environment due to searching of parking space and idle of the drivers by waiting parking spot. The Parking problems have been analyzed with the consideration of both quantitative and qualitative data collection methods. Different data collection methods has been used in this study, such as structured and semi-structured questionnaires, interviews, and observation and survey data collection methods are applied and then the collected data are analyzed and presented by Excel and Minitab. The study has analyzed the current parking system and finding of optimal parking location by considering parking site selection criteria and using AHP method. The space optimization model considers different constraints such as average arrival rate, parking capacity, vehicle size, parking angle and average parking duration and formulate LP model and LINGO17 software has been used to solve the LP model. In addition this study considers two scenarios which are average daily arrival rate of vehicles and parking duration and average daily maximum arrival rate of vehicles and average parking duration in the parking lot are inputs to develop space optimization linear programming model. As a result, it has found that existing parking capacity is increased by 119, 328, 421, and 483 parking spot from 60 parking spot and scenario- one fulfilled with 45, 60, and 90 degree of parking angles. And when considered scenario-two the existing parking capacity is increased by 11.2%, 31%, 40% and 45.4% of parking capacity of vehicles with respective parking angle. Finally comparing the result with actual parking capacity of on-street parking capacity with improved LP model and saved parking area are 6040 meter squares from 90 degree parking angle, 1492.48meters square from 30 degree parking angle, 4102.06meter square from 45 degree parking and 5268.08 meter square from 60 degree parking angle. Therefore, maximum saved parking area is 6040 meter square from 90degree parking angle. But the recommended parking angles for on-street parking are 30, 45, and 60 respectively.en-USparking space optimizationAHP methodlinear programmingThesis