This paper describes an ongoing research project at TNO in the Netherlands for assessing the safety of road networks using micro-simulation techniques. A benefit of micro-simulation comes from the ability to evaluate the safety of new ITS systems, new infrastructure design, management strategies and different traffic compositions beforehand. The use of surrogate safety measures (SSMs) is crucial to this approach. Part of the research is the development of a new micro-simulation model for intersection traffic, which can generate accurate SSMs. The new model aims to represent driver behaviour on intersections more accurately than the current generation of micro-simulation models.