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29 comments on November Statistics Updates

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ptone on February 4, 2006 - 9:02pm Permalink | Subthread | Comments top
Something I don't understand on the VMT graphs.  How do you get from the number given for December to that given for January.  It seems like quite a sudden drop.  You can see the same thing in the source cited.  It just seems that you should be able line those two up better as in theory you could have the graph go from July-June and the December to January transition should be meaningful.

-Ptone

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Stuart Staniford on February 4, 2006 - 11:42pm Permalink | Subthread | Parent | Comments top
That pattern is in all the data I've seen. I think there's two things. One is that in a normal year, traffic has grown 3% or so from one year to the next. However, I think the more important thing is that there really is a huge drop from December (holiday season) to January which seems to have the lowest driving of the year (lousy weather, why go anywhere). It's not that much bigger than the drop which always happens at the end of summer.
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