The Department of Electrical and Electronic Engineering Science, Faculty of Engineering and the Built Environment, invites you to a hybrid workshop entitled: “Impact of delayed information in navigation systems on road trafficby Alain Y. Kibangou


Nowadays many car drivers resort to route planning apps or navigation systems to decide which route to take. To be efficient, these applications increasingly use real-time data rather than historical data. However, delay is unavoidable since data collection, communication, and processing are necessary before their usage in the App.

For this purpose, we introduce a macroscopic dynamic traffic assignment model to describe the behaviour of drivers in choosing which route to follow to reach their destination. We assume that a part of the drivers follows the directions of a route planning App, whose directions are based on delayed traffic data. Through the stability analysis of the model, we show and quantify the excessive level of delay in traffic data that can be detrimental to the efficiency of the network by being responsible for the appearance of oscillating trajectories and unsatisfied demand.

The results of this preliminary study can be extended to socio-technical systems involving demand and supply mechanisms where quality of the information fed back to users plays a crucial role.


Alain Y. Kibangou is an Associate Professor at University Grenoble Alpes and a researcher of Gipsa-Lab.  He is an Associate Visiting Professor at the Faculty of Sciences of the University of Johannesburg since 2022. He received a Ph.D. degree in control, signal, and image processing jointly from the University of Nice Sophia Antipolis, France, and from the Cadi Ayyad University of Marrakesh, Morocco, in 2005.

He was a Postdoctoral Researcher successively with the I3S Laboratory, Sophia Antipolis, France, the LAAS, Toulouse, France, and the GIPSA-Lab, Grenoble, France. In 2009, he became an Associate Professor within the framework of the “CNRS-Higher Education chairs” program. He is an elected member of the Council of the Mathematics, Sciences and Technologies of Information and Communication research department of University Grenoble Alpes. He is the director of studies at the Electrical Engineering department of the University Institute of Technology of Grenoble. He is an associate editor for IEEE Transactions on Control of Network Systems. His research interests include network systems, distributed estimation, urban mobility, nonlinear filtering and system identification.

 Venue: Glaskas Boardroom, Department of Electrical and Electronic Engineering Science, Faculty of Engineering and the Built Environment, APK Campus

Virtual link: click here to join

Meeting ID: 330 249 089 064

Passcode: GyyZer


May 5, 2023

Disclaimer: The University of Johannesburg encourages academic debate and discussion that are conducted in a manner that upholds respectful interaction, safety of all involved, and freedom of association as enshrined in the law, the Constitution, and within the boundaries of the University policies. The views expressed during events are expressed in a personal capacity and do not necessarily reflect the views of the University of Johannesburg.

Latest News

| View All News

UJ recognised as one of South Africa’s premier universities for…

The University of Johannesburg (UJ) continues to solidify its position


Vice-Chancellor Message – 12 April 2024

On Wednesday afternoon, just as I was departing the scenic


SA’s Deputy President Paul Mashatile charms youth in celebration of…

Load shedding will be over before the end of this


SA’s first Art therapists graduate from UJ

The inaugural group of nine art therapists in South Africa


Vice-Chancellor Message – 05 April 2024

After a short mid-semester recess, which coincided with the Easter