Bucuresti, Romania
R.A.T.B. (Regia Autonoma de Transport Bucuresti)
V3A-93-CH-PPC #4030
Haning & Kahl transponder. It can change switches and traffic lights according to the route (it can be set up, in this case is 41) or manually by the driver by pressing the arrows (for switches) and the RTS button for green light. Unfortunately, only switches mounted between 2002 and 2004 are equipped with this system and traffic lights can be changed only on line 41 (but only one or two semaphores... there rest were either replaced or the inductive loops are damaged/stolen).

List of Bucharest trams.
Photo by Dr2005 - transportbucuresti.trei(a)gmail.com; More photos are available at www.transportbucuresti.trei.ro.