Volume 3 begins with an introduction to which are added four chapters focused on modeling and flow simulation in an environment in 2 or 3 dimensions (2D or 3D). They deal with different cases taken from situations found in the field. A conclusion comes close this third book:
- The different software used in this third volume;
- Computer simulation of discrete flows;
- Mixed flow simulation;
- Flows in 3D and the evacuation simulation;
- Flows in 3D for conveying and storage

The conclusion discusses the future developments of the software and their integration into society. At the end of each volume is a bibliography and a list of web links. There is also a glossary explaining some abbreviations, acronyms and some very specific terminology of logistics and operations research.