I am a 3rd year Computer Science student currently writing our Bachelor's thesis about finding diverse k-shortest paths in pedestrian networks.

We have chosen 3 local areas as our proposed pedestrian networks, and are mapped out based on OpenStreetMap and Google Maps, however these are only made by us researchers due to the lack of existing datasets.

Our panelists are asking who are the experts to validate the correctness (such as if the paths are actually traversable in real life) of our proposed pedestrian networks, and suggested to consult with the local authorities of our chosen locations.

Initially I thought that a semi-structured interview would be suitable for the consultation but I am unsure if it would be enough for validation.

What would be the best research tool for the expert validation of our data source (pedestrian networks)?