[Openstreetmap] openstreetmap.org updates, ontology stuff
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
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
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