Thanks again for the information. Upon reading, I am still not sure about the Coastal Plain Highway as ref A5 since its ref value is not documented on https://wiki.aaroads.com/wiki/Roads_in_Belize#cite_note-7 / 2023 Annual Technical Report of the Ministry of Infrastructure Development and Housing pdf). On theaaroad’s wiki, it’s on the ‘Secondary Highways / D Routes’ table and was previously ref=D200. I noticed that the A## system could be a remnant of the Forest Department Road System from reading other instances like “road between Punta Gorda and San Antonio... is Forest Department road A7, while the road that passed through Chiquibul is Forest Department road A10” . The Coastal Plain Highway seems like a national prominent road. Can you confirm A5 is the correct ref for it?

Thanks for all your help in getting a good baseline for refs of Belize in OSM!