Abstract: The paper offers the results of original research made on the application of AutoCADMap in line generalisation. The differences and similarities have been found out between theDouglas-Peucker method and the method of line simplification that is incorporated inAutoCAD Map. There have been also the inaccuracies found out in AutoCAD Map manualrelating to the issues of buffer width and tolerance, and the line width before and aftersimplification. The paper gives recommendations about pseudo nodes dissolving. It has beennoticed that AutoCAD Map simplification method is not independent of the order of points.The application of the method is illustrated by an example of coastal line of Istria.