Performance evaluation and redesign of Offa garage roundabout in Ilorin, Nigeria using microscopic simulation

Abstract

An urban traffic system is a composite network, which consists of varying types of intersections. In this paper, the focal point is on a heterogeneous traffic system, In this paper, the focus is on a heterogeneous traffic system featuring a non-signalized intersection (roundabout), with the aim of replacing it with a signalized one It has always been a difficult process to carry out Traffic analysis, with the ever increasing volume of vehicles and densely populated roadways. it is definitely difficult to suggest an alternative answer especially in developing countries like Nigeria. This paper analyses an intersection in the city of Ilorin Kwara State Nigeria. The intersection is modelled with the VISSIM 21, which is a traffic microscopic simulation software that has been extensively used in assessing traffic conditions. The paper also simulates the modelled intersection and determines the possibility of installing a traffic signal at the skewed T- intersection and checks its usefulness by comparing the Level of service, Queue length and carbon emission when the signals is installed and after.