Evaluation of Level of Service of Traffic at Major Road Intersections in Ibadan, Nigeria

Osuolale, O. M., Durodola, T. A. and Soladoye, E. O. Department of Civil Engineering, Faculty of Engineering and Technology, Ladoke Akintola University of Technology, PMB 4000, Ogbomoso. Nigeria. E-mail: omosuolale@lautech.edu.ng Abstract Transportation has been of immense benefits to the social, economic and political development of communities, however, it is sometimes characterised with negative impacts such as traffic congestions, delays, environmental pollutions and crashes. In this study, the level of service of selected major road intersections in Ibadan were investigated. Traffic volume of each intersection approach was conducted from 7am 7pm on Mondays, Wednesdays and Saturdays, delay studies were carried out during the morning, afternoon and evening peak hours and level of service for each approach was determined from the average delay per vehicle. The traffic volume reveals that passenger cars are the predominant vehicles at all the approaches and the morning and afternoon peak hours occurred between 8 to 9am and 2 to 3pm, respectively. The level of service for all the approaches is B, indicating slight reduction in capacity of the intersections.