January 21 - Two
Vienna S-Bahn trains packed with morning
commuters collided on a single-track stretch of line between
Hütteldorf and
Penzing in
Vienna's suburbs in eastern
Austria, leaving 41 people injured, five of them seriously. Among the injured was the driver of one of the trains. Both trains were operating the Line S45 service, and both trains were made up of 4024-series
rolling stock.[1][2][3][4]