Cyclists are vulnerable in traffic. There are quite a lot of casualties, particularly among 12-17 year olds and among the 50+ group. Most accidents involving cyclists take place in the urban area. Often these are accidents whereby cyclists and cars cross each other. Infrastructural measures aimed at separating bicycle traffic as far as possible from motor traffic, improvements to the vehicle (for example, the use of reflectors on bicycles and field of vision improving systems on lorries) and educational measures are aimed at reducing the risk of accidents for cyclists. Measures like wearing a cycle helmet, closed side protection on lorries and Intelligent Transport Systems (ITS) can also improve the traffic safety of the cyclist according to SWOV.