The study is innovative because it assesses the role of the environment for suicides in transportation environments.

The study contributes to the understanding of the time dimension of suicides in commuting train systems, daily, weekly and seasonally.

This is a study that adopts a spatial approach to suicides in transportation environments by assessing two types of clusters techniques.

It contributes with new Scandinavian evidence to the international literature.

The study follows a long tradition of this Journal in publishing research on suicides on transit environments.