BVG exercises rolling stock option with Stadler Pankow July 6, 2016 | Europe News Berlin’s transport operator Berliner Verkehrsbetriebe (BVG) has exercised a EUR140-million option with Stadler Pankow to supply 27 Type IK train sets, derived from Tango family of light-rai... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password