One, just one, of the many costs of #autosprawl, traffic congestion.

Urban Mobility Information: "As traffic congestion continues to worsen, the time required for a given trip becomes more unpredictable, and researchers now have a way to measure that degree of unreliability, introduced for the first time as part of the annual Urban Mobility Report (UMR), published by the Texas A&M Transportation Institute (TTI)."

http://mobility.tamu.edu/ums/report/