clang, clang, clang went the trolley oder schülerlotse

The cities of Augsburg and Köln, with others soon to follow suit, has installed pedestrian traffic signals in the pavement (Bodenampeln) of intersections and where lanes cross street-car tracks in order to prevent inattentive individuals, fixated on their mobile devices, from stumbling into on-coming traffic. Other places have designated lanes for those who’d prefer their telepresence to negotiating their actual surroundings. What do you think? Maybe some clever person ought to invent a crossing-guard (Schülerlotse) app that warns one if he or she is about to amble blinding into the street.