[OSM-talk] [talk-au] maxheight/height
isergean at hih.com.au
Tue Jul 28 07:42:35 BST 2009
Maarten Deen<mdeen at xs4all.nl> wrote:
> I recently came across this example where the way with the
> maxheight is a lot
> longer than strictly necessary. For every day uses this does not
> really pose a problem.
Roy Wallace <waldo000000 at gmail.com> wrote:
> A couple of potential problems with this: What if someone later adds a
> way that intersects the way with the restriction? The restriction must
> then be removed from the part of the way that is beyond the bridge -
> but this user should not be expected to know that the restriction even
This is self evident - we map what is on the ground, and we apply the
restriction to the section of the way for which the restriction applies.
If a service road for a carpark has a restriction for the entire carpark,
even if it is just caused by the danger associated with one or two
low-hanging sprinklers, or a pipe, the restriction applies to the entire
service road, and not just directly under the sprinklers.
If a motorway has a restriction for a motorway section, because of a low
bridge, the restriction applies to the section. A higher vehicle is not
permitted on that motorway section.
If a country lane has a low bridge, the restriction usually only applies to
the road section under the bridge, a higher vehicle is usually unrestricted
except when it passes the bridge.
Applying a restriction to a way where there isn't a restriction, is clearly
an error, and should be corrected by the next OSMer to pass that way.
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