Adding parks, commons, footpaths, correcting streets, hunting down details of building, strange areas etc. Still confused about how to categorise streets in the city. In the UK and some other cities the road classification system continues into towns, so for those mappers, who were the ones who developed the classification, it is not a problem, but in Spain (in madrid anyway) , major roads do not have classification number -they have a name. How to decide their tagging? Should it be on some historical classification? hard - many manjor roads are not replaced by new motorways, and have lost the nistorical, national significance, e.g. as the place one leave for another city from the city centre (e.g. Puerta de Sol, Place San Jacques). Should classification be done in terms of the numbers of lanes? e.g. 3 lanes each way= secondary, 4 lanes = primary; more = trunk. (Trunk is a very odd concept anyway) OR should all major roads be 'secondary' as they are not roads linking cities, and therefore are not major highways.
What about the smaller roads connecting districts - I assume they should be 'tertiary', just to show the traveller that these are the recommended routes.
In Madrid the major roads and junctions are indicated on direction signage in Green signs, the same as Secondary roads. Smaller streets are not usually given directions.
OSM also does not have the concept of an urban street (the proposal was abandoned) - some thing to distinguish purely residential streets from those with mixed use that are not major thoroughfares.