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How uncertainty can make traffic run smoother

In 2014, in the Netherlands, Belgium and Germany, the average person spend approximately 40 hours in a traffic jam - that is 5 work days! In this article, I will explain how mathematical models with uncertainty help traffic engineers to make decisions that improve traffic.

Traffic congestion: Braess' Paradox

Can you imagine that the, seemingly innocent and quite natural, idea to build more roads in order to solve the traffic problem can be sometimes quite a bad idea.

Traffic congestion: Optimal tolling schemes

Congested road networks are a big problem in many countries. Building more roads is not always the best solution to solve this issue. One of the reasons for this is that drivers behave selfishly

Layered networks II: The layered character of manufacturing plants

We have seen that queueing networks can be a great aid to answering such design questions. In this article, we look more closely at what queueing networks in manufacturing plants look like. It turns out that they have a very distinctive feature in that they are layered.

Traffic congestion: Tolls

One way to mitigate the consequences of drivers' selfish behavior, is by introducing tolls (or taxes) on certain parts of the road network. This is also known as road pricing.

Layered networks I: From manufacturing plants to queueing networks

Manufacturing plants convert raw material into a final product. Think of cars, where the production line consists of a large number of phases to put all the different parts together into a working car. Big machines in such a plant perform the processing steps in different phases, which often have to be done in a specific order.