Network node
| L 262 between wayside shrine and Landsweiler speeches |
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Section of the "Road map of the Saarland" in quadrant 6608. The kilometer table (photo below) is marked on the map with a small black arrow
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Network nodes are nodes in the road network that result from the traffic connection between two or more roads. This term is used in the federal, state and local road administration.
So-called sections lie between two consecutive network nodes. In the course of the streets a clear stationing direction is defined, z. B. determines in which direction the kilometers are counted up. The network node and stationing system thus provides a uniform and unambiguous classification feature for managing road-related issues. In addition to road administration, the network node can be used to determine the location via GIS ( geographic information system ) and satellite navigation and also for the police and rescue services.
Each network node is given a unique number for clear identification. For the parent network of roads ( highways , national roads , provincial roads and national roads , local roads ) this number is 7-digits by federal regulation uniform always. The first 4 digits consist of the number of the sheet of the topographic map 1: 25,000 within which the network node is located, the last 3 digits correspond to the numbering in the respective map sheet. Further numbering systems exist at the municipal level. In the locality, the network node and stationing system is usually represented by station signs (see photo), which contain at least the street name and the exact location of the station sign e.g. B. based on the network node numbers, a section number in combination with the station in kilometers.
special cases
Additional network nodes are assigned in the following cases, although there is no traffic connection between two higher-level streets:
- at the beginning of a street, if this has no traffic connection
- in the case of a separate lane, when both sections begin in the same network node and end in another common network node, on a lane at any point
- on different roads, if two sections begin in one network node and converge again in another common network node, on one section at any point
- at the end of a branch that is only connected to a higher-level street on one side
- at national borders for all roads
- at district boundaries for district roads
Network nodes can also be assigned
- at building authority borders
- in special network situations (e.g. planned intersection)
If a network node is a roundabout, the lane of the roundabout is recorded in the road information database in the form of branches.