The real need is for good ways and tools to evaluate the research in hand, before we decide what is needed in terms of further research efforts. Progress has clearly been made compared to about 6 ago, but we need to develop better yardsticks. Closing comments Lynne Edwards, European Commission DG Research Further decisions are needed in European Union in 2003 and 2004. Following are 3 areas which are going to be hot political items. The question whether vehicle emissions are important.
People have other reasons to be concerned about traffic.
These issues are important because of different implications for the European member states. The question of how much secondary particles matter. This is a transboundary problem. You get a different answer if you chase particles than if you chase just acidification, or ozone, or eutrofication. The question of what are the impacts.