Information on the European project on Portable Emissions Measurement Systems (PEMS)

This site is intended for use by the participants in the European project on Portable Emissions Measurement Systems (PEMS).

The goal of the EU-PEMS is to study the feasibility of portable emission measurement systems in view of their application in Europe for in-use conformity checking (IUC) of heavy-duty vehicles. The main objectives are:

- To assess and validate the application and performance of portable instrumentation relative to each other, and in comparison with alternative options for IUC testing;
- To define a test protocol for the use of portable instrumentation within the IUC of heavy-duty vehicles;
- To evaluate the US ‘Not To Exceed’ (NTE) approach and possibly develop a simplified method in order to propose IUC pass/fail criteria;
 -To address the need of the European industry, authorities and test houses to go through a learning process.

At the end of this project, the resulting test protocol including its data evaluation tools will then be used for a pilot program.