Since November 1st, I have been using Google's map API and running a cronjob every five minutes on an EC2 to collect data on my morning and evening commutes. The work is ongoing, but you can find the code (and eventually the full write-up) on my Github page. It is too early to draw conclusions- my period of observation is limited and still includes Thanksgiving and other holidays- but so far the mean weekday duration curve is depressingly flat between 8:00 and 9am on weekdays (varying by less than 2 minutes, on average).
The code will be generalizable for others to use (after creating Google maps API and AWS accounts). For my own route, I plan to analyze variation in trip duration by time, seasonal trends, and the effect of traffic density on route selection (so far Google has recommended more than 70 different routes!). I also plan to extend the hours of observation to 10am to allow the curve to fully revert to non-rush hour durations.
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