ANALYSIS OF TRAFFIC CONGESTION AND TRAVEL TIME USING QUEUING MODEL: A CASE STUDY OF IWO ROAD INTERSECTION, IBADAN, OYO STATE, NIGERIA

Abstract

One of the problems in a developing country like Nigeria is traffic congestion. It is an increasing problem in urban areas as it increases travel duration. Traffic congestion at intersection is on the increase in Ibadan since the number of vehicles increase per minute, which eventually lead to traffic delay. The study
was conducted at the Iwo Road intersection in Ibadan, the capital of Oyo State. The data collection was done by observation and tallying. The observation and manual counting were done during the peak traffic periods and off-peak periods (7:30 am – 8:30 am; 8:30 am - 9:30 am; 4:00 pm- 5:00 pm; 5:00 pm- 6:00 pm). The method of analysis used in this paper is the multiple server queuing modeling system (M/M/S): (/FCFS). The traffic intensity was obtained and we also computed the average number of vehicles in the system and in the queue. We obtained the average waiting time of vehicles in the system and in the queue using the M/M/S queuing model to analyze the queuing characteristics at the intersection. The result of the analysis showed that the traffic situation is intense on Mondays, Saturdays and Sundays. Hence, we have been able to show that queuing model is applicable at the Iwo Road and established that the flow of vehicles through the intersection is more than the capacity of the intersections.