Hi,

Do we have a tool or method for simplifying line networks so thats the networks 
topology is not destroyed? I have not studied the theory but I feel that the 
result would be close to what I want if no vertex that is "common" for two or 
more linestrings is removed, and if such vertex is moved, all the other 
vertices at the same location are moved as well. Thus connected ways would 
remain connected even after generalization.

ArcGIS seems to have a tool with advanced features 
http://desktop.arcgis.com/en/arcmap/latest/tools/cartography-toolbox/thin-road-network.htm.

-Jukka Rahkonen-
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