Key risk indices that express the risk and seriousness of injury accidents are often unavailable for the category known as `slow traffic'. The objective of this Dutch project was to collect and process data so that the key risk indices for slow traffic could be established for the various commonly occurring intersection types inside built-up areas. In the project, the data regarding slow traffic was limited to the data about moped and bicycle traffic. Measurements were carried out at more than 500 measuring locations distributed throughout the Netherlands in order to arrive at estimates of key risk indices. While the measurements were being taken, traffic counts were made of both rapid and slow traffic on each intersection fork. The characteristics of the intersection, its forks and its surroundings were inventoried as well. Photographs of each intersection fork were taken. The characteristics of the intersection and its surroundings as well as the findings of the traffic counts were combined with the corresponding accident data from the integrated nation-wide centreline road network (NWB ). The database produced, with its 500 integrated records, was used for calculating the key risk indices. The database produced has been constructed in such a way as to allow it to be updated and extended at any given time.
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