Nemocnice Beroun ambulance & Hasiči Praha Mercedes Vito v Praze [7.2013] 

The documentation and investigation van from the central fire station of the fire department of Prague responding at the same time as a medical transport ambulance from the Nemocnice (hospital) of Beroun. Beroun is a city which is 19 miles away from Prague.
Also note that the ambulance uses a 2-tone siren only (sounds like it only has that siren). I like to say that it's one of the less than 1% of the Czech emergency vehicles which have 2-tone sirens only (fortunately). The Czech Republic has no laws regarding the siren except that the siren must be a repeating noise. Enjoy this (rare) catch ;)
Prague, Czech Republic, 7/2013.