Balloon loop
A turning loop, reverse loop, reverse loop end loop track loop or short loop, bend or turn is the conclusion of a line in local public transport. It allows the vehicles used without change in direction reverse to initiate the return trip. A distinction is made loops at termini and those at Zwischenendstellen. Performs a loop ride through several streets, then one speaks of a loop block, block or loop block bypass.
Particularly common are turning loops in tram networks, since they allow the use of equipment there vehicles. In bidirectional vehicles they enable a smoother and faster operation because the driver does not have to change the driver's cab and the sidecar the cumbersome use of Umsetzendstellen omitted. Indispensable are turning loops as in trolleybuses and buses in regular service. Alternatively, a roundabout be used as a turning loop.
Reversing loops, there are also in railways, but less frequently than track triangles, because the larger minimum radii of the main and branch lines require a lot of space for the loop. An example is the turning loop the connection path of the Stuttgart S-Bahn, the south-west of the station Schwabstraße located and runs completely in the tunnel. It was necessary in order to ensure the efficient Schwabstraße Zugwenden. It has a radius of 190 m, is 50 km / h and it includes a zuglanges passing siding. Another example is the turn of the loop Selketalbahn in stairs (51 ° 39 ' 41 "N, 10 ° 52' 45 " O51.66132310.879158 ). Even the early Talgo articulated trains in Spain and the United States were dependent on vehicles as means turning loops.
Especially when even a passing loop is present, the relatively large turning loop systems of rail vehicles are often designed as a shortcut points to other modes of transportation. Within the enclosed area eg, multifunctional platforms with buses, kiss- and-ride bays and on or disposals can be applied to other transport planes.
No reversing loop is a line management in mountain railways, which does a change in direction of about 180 ° to the level mining. In this case one speaks of a turn.