Line bundle

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Line bundle is an administrative term in modern local public transport (ÖPNV). It was introduced in the course of regionalization and the creation of competitive conditions, including under EU law . The term is mainly used for bus services, while the term networks are used for railways.

The aim is to reassign lines or concessions through Europe-wide tenders . In general, the routes are organized regionally in local transport plans and combined into "bundles" (line bundling). For example, all lines in the area around a larger city, lines in a local sub-area (city NE / NW / South) or within a district area can be combined. The contracting authorities , districts or transport companies appointed by them are responsible for the tenders .

It is possible to keep pure city transport ( city ​​bus ) out of a bundling and sometimes also a tender (direct award). This creates “city bus cities” and regional networks ( regional bus and regional express bus services ). In the urban area, it is mostly public-owned companies ( municipal utilities ). A city transport company can also put its city bus network to tender (for example Stadtverkehr Detmold GmbH).

The term is also used with a different meaning: For example, several traffic lines can be brought together in a city center in order to shorten or simplify the intervals and transfer processes through parallel operation. Individual streets or a central inner city route is then served in a bundle, followed by a split into different directions of travel. This bundling can rail transport, particularly road or rail, including. The primary goal here can also be a merger for a common tunnel route, for example in the inner city tunnel of the Bielefeld Stadtbahn . The common line section is referred to as the trunk line, especially for railways , a designation that originated in rail traffic.

A variant of identifying the association of several lines in a bundle is to use crossed line numbers and / or red line numbers . In the trolleybus system in Naples, for example, there were two line bundles 254, 254 , 254 and 254 on the one hand and 255, 255 , 255 and 255 on the other hand in the 1960s and 1970s .

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