On Tue, Jul 28, 2009 at 08:11:21AM +1000, Roy Wallace wrote: > There are two issues here: 1) what should be tagged and 2) what should > it be tagged with. > > For 1), what should be tagged? Definitely the bridge. For two reasons: > firstly, clearance under a bridge is an attribute of the bridge.
What of bridges that cross multiple ways of different heights? Simon -- A complex system that works is invariably found to have evolved from a simple system that works.—John Gall
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