Figure 5-2 - Change in Travel Time Index by Metro Area Population: 1993 and 2003

Figure 5-2 - Change in Travel Time Index by Metro Area Population: 1993 and 2003

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Figure 5-2 Labor Productivity of For-Hire Transportation Industries:1991-2001. If you are a user with disability and cannot view this image, use the table version. If you need further assistance, call 800-853-1351 or email answers@bts.gov.

KEY: TTI = Travel Time Index.

NOTE: The TTI is the ratio of peak period travel time to free-flow travel time. It expresses the average amount of extra time it takes to travel in the peak period relative to free-flow travel.

SOURCE: Texas A&M University, Texas Transportation Institute, 2005 Urban Mobility Report (College Station, TX: 2005), also available at http://tti.tamu.edu/, as of May 2005.