On Thu, Aug 04, 2005 at 12:09:40PM +0200, Christo Du Preez wrote: ... > What is the best procedure to build my roads up from > all the segments parts This is a missing function. GEOS/JTS added the LineMerge class for this, but we never added an interface for it in PostGIS. I added this in the TODO for release 1.1.0. --strk;