[Openstreetmap] openstreetmap.org updates, ontology stuff

David Cantrell david at cantrell.org.uk
Sat Mar 19 14:57:37 GMT 2005


Matt Amos wrote:

> this is basically an ontology, though. what if there is more than one 
> type of motorway and more than 2 types of main road? how do you 
> attach speed limit info? (e.g: autobahn, motorway and route nationale 
> are all motorways, but have different speed limits)

You need a seperate field for speed limit.  Not all motorways have the 
same limit.

You should probably have that field be capable of taking a default 
(which for motorways would be 70) but which can be over-ridden.

Also consider that the speed limit is different on dual carriageways and 
single carriageways, and for different types of vehicle.

-- 
David Cantrell | random organic glop and a metric fuckton of electricity

     Suffer the little children to come unto me, as
     their buying habits are most easily influenced.
        -- Marketroid Jesus




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