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Table 17
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| 1991 delay per person | 2001 delay per person | Percentage change 1991–2001 | Annual growth rate 1991–2001 | |
|---|---|---|---|---|
| Very large areas | 24 | 32 | 36 | 3.1 |
| Large areas | 12 | 22 | 75 | 5.8 |
| Medium areas | 7 | 14 | 109 | 7.6 |
| Small areas | 4 | 7 | 76 | 5.8 |
| 75-area average | 17 | 26 | 53 | 4.3 |
Annual Roadway Congestion Cost per Person
(Current dollars)
| 1991 cost per person | 2001 cost per person | Percentage change 1991–2001 | Annual growth rate 1991–2001 | |
|---|---|---|---|---|
| Very large areas | 342 | 646 | 89 | 6.6 |
| Large areas | 181 | 449 | 148 | 9.5 |
| Medium areas | 99 | 290 | 193 | 11.3 |
| Small areas | 56 | 132 | 136 | 9.0 |
| 75-area average | 250 | 517 | 107 | 7.5 |
Key:
Very large = over 3 million population (e.g., New York-Northern NJ).
Large = 1 million–3 million population (e.g., Atlanta).
Medium = selected areas with 500,000–1 million population (e.g., Memphis).
Small = selected areas under 500,000 population (e.g., Colorado Springs).
Notes: TTI estimates delay indireclty by using traffic volumes and methodology developed by the Federal Highway Administration for estimating the effects of roadway incidents.
TTI estimates cost by taking into account fuel cost, value of time, and commercial vehicle operating cost.
Source: Texas Transportation Institute (TTI), 2003 Urban Mobility Report, "Base Statistics for the 75 Urban Areas" spreadsheet, available at: http://mobility.tamu.edu/ums/mobility_data; and personal communication, October 2003.