I've been trying to import different data into QGIS to produce maps that look like what's displayed on OpenStreetMap.com, mainly I want big roads to be thick, small roads to be skinny (like we're used to seeing on any online map). I have imported a variety of shapefiles, and all have good street data, but I can't get the variety of road thickness like I'm looking for. The end game is to get vector shapes into Adobe Illustrator for manipulation.
Does anyone know of a technique to export vector data from a source that will give you the different road thicknesses as displayed on OpenStreetMap.com?
Thanks for your time.