The RE9 Rhein-Sieg-Express operates on the line Aachen - Köln - Siegen (forming a twice-hourly rhythm with RE1 on Aachen - Köln), until 2012 it was exclusively operated with double-deck trains, today some trains are composed of Talent 2 units in the versions RSX3, RSX4 and RSX5, with a floor height of 800 mm. Only two units of the version RSX5 exist (numbered 301 and 302) and they seem to operate coupled together on this line. The Bombardier Talent 2 "Hamster" is known for huge delays, while the first prototype was shown at InnoTrans in 2008, the first regular services started four years later in 2012 - three years later than planned.
Aachen Hbf, 2013-08-01.<p>
<a href="mailto:tbk.uncia@gmail.com">tobias b k&ouml;hler</a>