UCR October 2011-December 2011 (FY 2012, Q1)
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A Snapshot of Congestion Trends in the U.S. for October 2011 through December 2011.
Congested Hours
Average duration of weekday congestion
-22 minutes
from last year
Oct-Dec 2011: 4:30
Oct-Dec 2010: 4:52
Travel Time Index
Peak period travel times vs. off-peak travel times
-1 point
from last year
Oct-Dec 2011: 1.22
Oct-Dec 2010: 1.23
Planning Time Index
Unreliability (variability) of travel
-3 points
from last year
Oct-Dec 2011: 1.52
Oct-Dec 2010: 1.55
Summary of Nationwide Trends
- Congested hours improved (22 minutes shorter), the travel time index improved slightly (by 1 point), and the planning time index improved by 3 points. All measures compared the most recent 3 months in 2011 to the same 3 months in 2010.
- Eight of the 18 cities showed improvements in all three measures.
- Six of the 18 cities showed worsening conditions in all three measures.
- Five of the 18 cities had stable or mixed results among the three measures.
Congestion and Reliability Trends for Each UCR City
| City | Congested Hours | Travel Time Index | Planning Time Index | % Change in VMT | % Usable Data | |||
|---|---|---|---|---|---|---|---|---|
| 2011 | Change from 2010 | 2011 | Change from 2010 | 2011 | Change from 2010 | |||
| Atlanta, GA | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. |
| Boston, MA | 5:37 | +0:01 | 1.32 | +2 | 1.78 | +2 | -2% | 100% |
| Chicago, IL | 7:13 | +0:14 | 1.35 | +3 | 1.77 | +8 | -2% | 77% |
| Detroit, MI | 2:53 | -0:14 | 1.12 | 0 | 1.39 | -4 | 0% | 100% |
| Houston, TX | 3:46 | +0:17 | 1.26 | +2 | 1.62 | +11 | 0% | 83% |
| Los Angeles, CA | 5:53 | -1:21 | 1.29 | -5 | 1.61 | -9 | 0% | 100% |
| Minneapolis-St. Paul, MN | 3:43 | -1:00 | 1.18 | -5 | 1.44 | -29 | +3% | 98% |
| Oklahoma City, OK | 1:55 | +0:21 | 1.07 | +1 | 1.21 | +3 | -2% | 100% |
| Orange County, CA | 3:57 | -0:48 | 1.22 | -4 | 1.51 | -13 | -2% | 100% |
| Philadelphia, PA | 5:23 | -0:25 | 1.27 | -1 | 1.67 | -5 | 0% | 100% |
| Phoenix, AZ | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. |
| Pittsburgh, PA | 6:28 | -0:13 | 1.26 | +5 | 1.59 | +13 | +1% | 100% |
| Portland, OR | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. |
| Providence, RI | 3:46 | +0:46 | 1.15 | +1 | 1.45 | +7 | 0% | 100% |
| Riverside – San Bernardino, CA | 3:03 | -0:32 | 1.13 | -2 | 1.34 | -7 | +2% | 100% |
| Sacramento, CA | 1:59 | -0:32 | 1.10 | -1 | 1.26 | -5 | -1% | 100% |
| St. Louis, MO | 3:54 | +2:07 | 1.10 | +1 | 1.31 | +5 | -4% | 93% |
| Salt Lake City, UT | 1:33 | -2:22 | 1.04 | -2 | 1.15 | -13 | +1% | 98% |
| San Antonio, TX | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. |
| San Diego, CA | 2:38 | -0:13 | 1.14 | -1 | 1.39 | -3 | -1% | 100% |
| San Francisco, CA | 3:36 | +0:08 | 1.18 | +1 | 1.40 | 0 | -3% | 100% |
| Seattle, WA | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. |
| Tampa, FL | 3:05 | +0:40 | 1.13 | 0 | 1.31 | 0 | -2% | 100% |
Notes:
Green bolded values (with – sign) indicate improving conditions; red italics (with + sign) indicate worsening conditions.
"n.a." indicates that data was not available or was of insufficient quality.
Comparison of 2011 to 2010 is for the same three-month period (October - December).
For more information on the UCR, contact Rich Taylor (Rich.Taylor@dot.gov).
