This article focuses on generational differences in spatial mobility. Assuming that the ability to cope with the social transformations related to growing mobility varies significantly across generations, we use mobile positioning data collected in Estonia during 2014 providing four main indicators, namely, the number of locations visited and the distances between visited locations, within Estonia and abroad. The results indicate that spatial mobility declines linearly with age; however, a high degree of heterogeneity exists within age groups. Whereas the spatial mobility of the most active members of the younger generation takes place mostly within Estonia, among the most active older generation focus their activity beyond its borders. The study reveals "delayed mobility" patterns among the most active groups of the older generation and a new "immobility culture" among the younger generation in terms of cross-border activities in a transition society.
Keywords: activity space; generational differences; mobile phone big data; social acceleration; social transformations; spatial mobility.