--- On Fri, 7/8/09, "Marc Schütz" <[email protected]> wrote:

> But that's the point! We need a way of modelling more
> complex cases anyway, so why do you want to special case
> school zones?

School zones are a special case because they don't operate all year round, and 
you need to store school terms in addition so you can calculate if the school 
zone is in effect.


      

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