On Tue, Jul 28, 2009 at 11:04 AM, Ross Scanlon<[email protected]> wrote:
> Does this mean the bridge has a clearance of 2.8 or the road under the bridge 
> has a clearance of 2.8.  To me this would suggest the bridge has a limit of 
> 2.8 ie vehicles travelling over the bridge can not be above 2.8 high.
>
> I'd suggest that if the bridge has a height limit, ie clearance, then the 
> bridge is tagged with max_height.
>
> If the road under the bridge has a height limit, ie clearance, then the road 
> is tagged.

Sorry, maybe this is a language issue. In my mind, "height limit" of a
way refers to maximum height *above* the way, whereas "clearance" of a
way infers maximum height *under* the way. Maybe "clearance" isn't the
best word for this - please suggest others.

My main point is that when there is a "maximum height under a way",
this should be tagged as an attribute of that way, not of the ways
that pass under it.

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