Travel Graphs: Followup

Friday, November 30, 2007

We took the time this last holiday weekend to make sure that the recommendations we provided on travel times on I-90 over Snoqualmie Pass were accurate. We collected traffic data and placed it on top of our predictions, which were based on historic data. Turns out we were very close. With any traffic measurement outside influences must be considered. Fortunately we experienced very mild weather conditions across the state and few traffic incidents.

We also noticed that more drivers traveled on Friday and Saturday, rather than the traditional Sunday evening rush for home. That helps keep traffic moving for everyone and we greatly appreciated those drivers who altered their schedules.

The colored thick lines on the graphs represent the estimated traffic volumes, the black lines on the graphs represent actual traffic.



















































On a usage note, the travel graphs for I-90 were looked at over 1,000 times a day the 20th, 21st and 22nd of November.

Thanks again to those who adjusted their trips to avoid being in and creating congestion.

Anyone else find these useful and use them to plan your trip? We would love to hear your story.

2 comments:

Eastside Commuter said...

Thanks for all the information you provide! It's great to have such a useful website available to us. Before any major trips or during holiday weekends, I pull up the WSDOT site often.

Thanks!

Anonymous said...

Thank you for providing this and the comparisons with actual. Who can we contact to talk about the methodology you have used for these hourly forecasts? Thanks!

 

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