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Annual Hours of Delay Per Peak Traveler

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Visualization Notes:

The annual delay per commuter is the yearly sum of all the per-trip delays for those persons who travel in the peak periods (6 to 10 a.m. and 3 to 7 p.m.). This measure illustrates the effect of the per-mile congestion as well as the length of each trip. Tucson once lagged behind Phoenix in annual delay, but has surpassed the larger city in this indicator; however, both cities have shown declines in the annual delay per communter since peaking in 2005.