stop has certain limitations in application. Severe snow and ice conditions, for example, could interfere with operation of the wayside trip arm. Its widest application, therefore, is on underground rapid transit lines, where conditions that might interfere with proper operation are readily controlled. Train stops on London Underground lines are gradually being phased out in favour of ATP and distance-to-go signalling. Train stops remain standard equipment on all RailCorp metropolitan passenger lines in New South Wales, and on the electrified suburban railway system in Melbourne, Australia. The Train stops at the Berlin S-Bahn were first installed in the late 1920s. They are named (or ) because of their testing and first installation on the Stettin Railway to the suburban town of Bernau. This was the first heavy rail rapid transit system with third-rail electrification in Germany. They are being phased out in favour of the ZBS system based on Eurobalises until 2025. Trackside installation Berlin S-Bahn rapid transit uses a metal bar as the trip arm, positioned at the height of the first bogie, on which the trip cock is placed. The metal bar (also named "Streckenanschlag" / track stop collar) folds away to allow passing. It is being replaced by ZBS until 2025. Berlin U-Bahn small profile underground railway used a metal stick as a trip arm, which hung over the track horizontally like a semaphore signal. The trip cock was on the roof of the first wagon (near the first door) almost looking like a lightning rod. The system was phased out in the 1960s (West), respectively 1990s (East) and replaced by an inductive train stop system. Berlin U-Bahn large profile underground railway used a mushroom-shaped swivel next to the right rail as a trip arm. The trip cock was mounted on the first bogie. This system was replaced likewise. London Underground uses a square-shaped metal plate that functions similarly to that on the New York City Subway system. Several lines on the Moscow Metro use a semi-circle that rotates into position when signals are red. All of them are on the right side of tracks as trains' trip cocks are fitted on the right side. New York City Subway uses a T-shaped metal bar rising from the floor as a trip arm; on the right side of the track for the A Division (numbered trains) and left side for the B Division (lettered trains). To allow trains