Regional Fleet Composition

Development of an approach for harmonized fleet composition statistics for the Belgian regions for use in emission modelling

Belgium drafts air emission inventories for the transport sector as part of its international obligations. Each region in Belgium (Flanders, Wallonia and Brussels) developed its inventories in order to produce the consolidated Belgian national emission inventory.

This segregated approach caused inconsistencies between the different regions and produced inconsistent output at national level. After analysis, the Coordination Committee for International Environmental Policy (CCIEP) concluded that the inconsistencies were indeed related to discrepancies in the regional fleet.

The project goal was to harmonize and improve the statistical data to produce a consistent fleet composition to be used in emission inventories. TML constructed a tool that meets the following requirements:

  • To develop a consistent methodology to transform the different data sources available into inputs for generating historical and future vehicle fleets
  • Historic regional fleet composition for the years 1990 to 2012
  • Being able to make fleet projections in a business-as-usual scenario for the years 2015, 2020, 2025, and 2030

Update for COPERT5

In the course of 2017 we update the vehicle stock module. The main focus of the update is to adapt the tool for the use of COPERT5 instead of COPERT4. We also develop a correction for old inactive vehicles and we make some further changes to take some new input data into account. We also extend the fleet projections up to 2040.


No public report


2013 - 2014; update in 2017

funded by

Agence Wallonne de l'Air et du Climat  (AwAC)


Filip Vanhove, Kris Vanherle, Bruno Van Zeebroeck


Filip Vanhove

+32 16 31.77.35
reference: 13.08-16089