This is a car of the DB fire brigade. Equipped with two pumps,
a foam tank, fire hoses, a monitor and other things, it can be
used to fight fires on or near tracks. The train is completed
with a diesel engine (probably class 290 or similar) an two
tank cars, containing 48.000 l of water each.

Photo by Sven Herzfeld (s.herzfeld@maschsee.han.de)