To enable better routing, we will start upgrading the road network:
https://en.wikipedia.org/wiki/List_of_roads_in_Bangladesh
Nxx roads will be Major Highways (MH)
Rxx roads will be minor Highways (mH)
Zxx roads will be at least Primary Street (PS)
If a stretch is part of an Asian Highway, please add AHX in the alt name. These highways will generally get the status of freeway, to enable longer routing