Abstract:
The increasing population and number of cars have a negative impact on the capacity and
operational conditions of road systems. Congestion and delays are the main problems with the
city's road segments' capacity and level of service. The community as a whole, business
owners, employees, and passengers are all quite worried about this. These days, major
Ethiopian cities like Jigjiga are quite worried about this problem. One of these important
Ethiopian cities, Jigjiga City, is the subject of this study. Analysis shows how three-wheeled
vehicle transportation influences the capacity and level of service of specific road segments in
Jigjiga City is the main objective of this study. Methods of both quantitative and qualitative
research are employed. The degree of quantitative analysis and data used to decide on the level
of service provided by the chosen road segments was determined using quantitative data and
analysis. Quantitative data was mostly input as primary data and direct field measurements,
primarily volume count and speed data. In order to calculate and analyze the traffic volume,
peak hour factor, congestion, passenger car unit (PCU), and volume capacity ratio, survey data
will be employed. We have chosen the main road segments between Harari Kela and 04 Keble
junctions to explore how Bajaji transport affects service level and capacity. According to the
Highway Capacity Manual, the segments are categorized as two-way divided sub-urban
Arterial under the interrupted flow type. Analysis shows that the chosen portions are doing
well based on a volume-to-capacity analysis of the level of service. LOS F is the lowest level
of service, whereas LOS D is the highest level. The capacity analysis's findings indicate that
the segment's capacity is completely inadequate for the chosen section. In order to improve its
Los gradients and better satisfy traffic conditions, some corrective adjustments were made.
