Hello. Thanks for mapping.
I noticed that you tag highways in rural areas often incorrect, to my opinion.
For example. You often tag small traces in between agriculture fields as unclassified or residential. 
Please read and follow the tagging rules on this linked document.
Decision tree, which tag to be used for roads
https://drive.google.com/file/d/1S48CEVi3yiAYWhIJu57jtLyv0ZVUbGwJ/view?usp=share_link
https://wiki.openstreetmap.org/wiki/East_Africa_Tagging_Guidelines
or
https://wiki.openstreetmap.org/wiki/Highway_Tag_Africa

