Main roads and broad tracks

General info
1/100 000 to 1/25 000
Spatial resolution: 
30 to 10m
Required processing: 
Orthorectification and mosaicking of the satellite images, object-based image analysis (OBIA), vectorisation. The output of a dedicated line detector can be added into the object-based image analysis.
Data requirements: 
High resolution satellite imagery (e.g. LANDSAT 8 (free of charge), TERRA-ASTER, SPOT).

Georeferenced lines delineating the main roads and broad tracks.

Why using remote sensors?: 

Producing an up-to-date map of the roads for a region, a province etc. can help priority setting and mission planning.