What is a road hierarchy diagram?
A site analysis drawing that ranks the streets around a site by importance, usually with line weight or colour: arterial roads, distributor roads, local streets and pedestrian routes. It explains how people and vehicles arrive, where the noise and traffic come from, and which frontage should hold the entrance.
Where does the road classification come from?
From the highway tag of each street in OpenStreetMap: motorway, trunk, primary, secondary, tertiary, residential, service, pedestrian, footway, cycleway and path. MapToNap maps those classes to line weights and dash patterns.
Is the street network map generator free?
Yes. Roads & Streets is one of the four analyses in the free version, together with Urban Fabric, Functional Areas and Green & Water. Free exports carry a MapToNap watermark; Pro removes it and unlocks the rest of the 2D site analysis set.
Can I show only the pedestrian routes?
Yes, with Pedestrian Network, a separate Pro analysis that isolates walkways, paths and pedestrian spaces.
Can I open it in CAD?
There is no direct DXF export for site diagrams. Export the SVG and convert it to DXF in Illustrator or Inkscape, or place the vector PDF in your layout software.
How accurate is it?
It is as complete as OpenStreetMap is in that place. Coverage is excellent in most European city centres and good in many cities worldwide, but patchy in others, including parts of China and many smaller towns. Check against an aerial photo before relying on it. If there is no data at all, the drawing is labelled SCHEMATIC instead of being filled with invented geometry.