UCR January 2011-March 2011 (FY 2011, Q2)
PDF Version 350KB
PDF files can be viewed with the Acrobat® Reader®.
A Snapshot of Congestion Trends in the U.S. for January 2011 through March 2011.
Congested Hours
Average duration of weekday congestion
+9 minutes
from last year
Jan-Mar 2011: 4:26
Jan-Mar 2010: 4:17
Travel Time Index
Peak period travel times vs. off-peak travel times
+1 point
from last year
Jan-Mar 2011: 1.21
Jan-Mar 2010: 1.20
Planning Time Index
Unreliability (variability) of travel
+2 points
from last year
Jan-Mar 2011: 1.51
Jan-Mar 2010: 1.49
Summary of Nationwide Trends
- All three nationwide measures in 2011 showed slightly worsening conditions when compared to the same three months in 2010.
- Three of the 19 cities showed improvements in all three measures.
- Nine of the 19 cities showed worsening conditions in all three measures.
- Seven of the 19 cities had 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 | 5:23 | +1:21 | 1.25 | +6 | 1.71 | +18 | -6% | 100% |
| Chicago, IL | 7:15 | +0:46 | 1.28 | +3 | 1.67 | +5 | +3% | 70% |
| Detroit, MI | 3:25 | +0:30 | 1.13 | -1 | 1.59 | +18 | 0% | 41% |
| Houston, TX | 3:42 | -0:38 | 1.23 | -7 | 1.56 | -11 | 0% | 82% |
| Minneapolis-St. Paul, MN | 4:21 | +0:09 | 1.20 | +1 | 1.67 | -2 | 0% | 99% |
| Oklahoma City, OK | 2:34 | +0:14 | 1.07 | +1 | 1.27 | +6 | -4% | 100% |
| Orange County, CA | 3:34 | -0:19 | 1.19 | -2 | 1.46 | -6 | +1% | 94% |
| Los Angeles, CA | 6:13 | -0:20 | 1.30 | 0 | 1.61 | +1 | 0% | 94% |
| Philadelphia, PA | 5:39 | +0:49 | 1.24 | +2 | 1.61 | +6 | -1% | 95% |
| Phoenix, AZ | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. |
| Pittsburgh, PA | 6:15 | -1:12 | 1.22 | +1 | 1.57 | +6 | +5% | 98% |
| Portland, OR | 1:25 | +0:05 | 1.23 | +4 | 1.67 | +12 | -2% | 33% |
| Providence, RI | 3:38 | +1:15 | 1.14 | +6 | 1.49 | +21 | -4% | 100% |
| Riverside - San Bernardino, CA | 2:53 | -0:13 | 1.12 | +1 | 1.31 | +2 | -1% | 94% |
| Sacramento, CA | 2:00 | -0:29 | 1.08 | -2 | 1.24 | -9 | 0% | 94% |
| St. Louis, MO | 3:22 | +1:02 | 1.09 | +1 | 1.35 | +9 | +5% | 96% |
| Salt Lake City, UT | 2:14 | +1:00 | 1.03 | 0 | 1.10 | -3 | 1% | 99% |
| San Antonio, TX | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. |
| San Diego, CA | 2:19 | +0:03 | 1.12 | +2 | 1.35 | +5 | -1% | 94% |
| San Francisco, CA | 2:51 | -0:06 | 1.13 | 0 | 1.32 | -3 | +1% | 94% |
| Seattle, WA | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. |
| Tampa, FL | 3:39 | +0:42 | 1.15 | +3 | 1.38 | +9 | +6% | 87% |
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 (January - March).
For more information on the UCR, contact Rich Taylor (Rich.Taylor@dot.gov).
