Int. J. Environ. Res. Public Health 2012, 9 778 The most striking finding, which clearly deviates from the national pattern, is the choice of platforms as entrances to the track area among suicide victims. This could possibly be explained by better fencing and fewer unprotected level crossings compared to the country as a whole, leaving fewer options to access the track area but from platforms. Whether this in turn results in fewer incidents than otherwise expected, or merely a spatial redistribution of cases, is something we cannot comment on from our results. It is claimed by others, however, that impeding accessibility to means of suicide also has an absolute preventative effect [24]. The existence of frequent express trains passing near platforms at high speeds, representing an easily accessible and very potent means of suicide, might also increase the attractiveness of platforms among suicide attempters in this urban area. All trains involved were passenger trains, and commuter trains were most affected. However, these trains are also the most common in the area which may explain their larger involvement. Compared to frequency at different track sections, the airport express line appears considerably overrepresented. On the north section, commuter trains are nearly twice as frequent as airport trains but are involved in much fewer incidents. All incidents with airport trains occurred when trains passed station areas without stopping. Taking all results into consideration, we believe that preventative efforts should concentrate on separating people from trains in motion, especially those passing by at high speeds, either by physical barriers or by redirecting passing trains to less accessible tracks. Identifying suicide attempters at crowded platforms may be a difficult task, but effective surveillance or sensor systems could clearly contribute to improved safety in cases when persons are attempting to trespass prohibited areas before trains arrive or pass. 5. Conclusions The pattern of train-person collisions in the greater Stockholm metropolitan area differs from the national pattern in one important respect. Most incidents occur in the immediate vicinity of platforms, indicating that more attention should be devoted to platform safety compared to other parts of the country. Express trains, passing by at high speeds, represent a special concern. This study was funded by the Swedish Transport Administration. The authors declare no conflict of interest. Acknowledgments Conflict of Interest References 1. 2. Rådbo, H.; Svedung, I.; Andersson, R. Suicides and other fatalities form train-person collision on Swedish railroads: A descriptive epidemiologic analysis as a basis for systems-oriented prevention. J. Saf. Res. 2005, 36, 423–428. Rådbo, H.; Svedung, I.; Andersson, R. Suicide prevention in railway systems: Application of a barrier approach. Saf. Sci. 2008, 46, 729–737.