www.MoneyWatch.com wrote an article this week called "Traffic Pain: 10 Cities with the Worst Commutes" (http://shine.yahoo.com/event/financiallyfit/traffic-pain-10-cities-with-the-worst-commutes-2444341/)

Of course, Oklahoma City was not one of the 10 worst cities of traffic but they did provide links to all the data information of all 101 cities looked at.

Here is Oklahoma City-specific traffic numbers: http://mobility.tamu.edu/ums/congestion_data/tables/oklah.pdf

Here is the Urban Mobility Report from the study: http://tti.tamu.edu/documents/mobility_report_2010.pdf