UCR April 2011-June 2011 (FY 2011, Q3)
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A Snapshot of Congestion Trends in the U.S. for April 2011 through June 2011.
Congested Hours
Average duration of weekday congestion
-10 minutes
from last year
Apr-Jun 2011: 4:22
Apr-Jun 2010: 4:32
Travel Time Index
Peak period travel times vs. off-peak travel times
-1 point
from last year
Apr-Jun 2011: 1.20
Apr-Jun 2010: 1.21
Planning Time Index
Unreliability (variability) of travel
-2 points
from last year
Apr-Jun 2011: 1.46
Apr-Jun 2010: 1.48
Summary of Nationwide Trends
- All three nationwide measures in 2011 showed slightly improving conditions when compared to the same three months in 2010.
- Twelve of the 19 cities showed improvements in all three measures.
- Three of the 19 cities showed worsening conditions in all three measures.
- Four of the 19 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 | 5:56 | +0:30 | 1.29 | +2 | 1.69 | +6 | 0% | 100% |
| Chicago, IL | 8:04 | -0:26 | 1.34 | -5 | 1.70 | -4 | +2% | 72% |
| Detroit, MI | 2:43 | -0:15 | 1.12 | +1 | 1.39 | +5 | +4% | 100% |
| Houston, TX | 3:17 | -0:14 | 1.22 | -2 | 1.49 | -2 | 0% | 83% |
| Minneapolis-St. Paul, MN | 3:33 | -0:45 | 1.18 | -1 | 1.45 | -3 | +2% | 100% |
| Oklahoma City, OK | 1:29 | -0:08 | 1.05 | -1 | 1.16 | -3 | 0% | 100% |
| Orange County, CA | 3:25 | -0:09 | 1.17 | -2 | 1.43 | -3 | -1% | 100% |
| Los Angeles, CA | 6:06 | -0:21 | 1.27 | -2 | 1.55 | -4 | -2% | 100% |
| Philadelphia, PA | 5:51 | -0:23 | 1.24 | -4 | 1.63 | -3 | -2% | 100% |
| Phoenix, AZ | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. |
| Pittsburgh, PA | 6:42 | -1:10 | 1.30 | +10 | 1.67 | +24 | +1% | 100% |
| Portland, OR | 1:43 | +0:03 | 1.23 | 0 | 1.65 | +3 | -2% | 33% |
| Providence, RI | 2:53 | +0:39 | 1.11 | +3 | 1.32 | +8 | -2% | 100% |
| Riverside – San Bernardino, CA | 2:27 | -0:31 | 1.09 | -1 | 1.23 | -2 | -1% | 100% |
| Sacramento, CA | 1:41 | -0:15 | 1.06 | -2 | 1.18 | -3 | -2% | 100% |
| St. Louis, MO | 2:54 | +1:10 | 1.09 | -1 | 1.26 | -1 | +3% | 98% |
| Salt Lake City, UT | 1:19 | -0:02 | 1.03 | -2 | 1.12 | -4 | +1% | 97% |
| San Antonio, TX | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. |
| San Diego, CA | 2:10 | -0:05 | 1.09 | -1 | 1.25 | -4 | -2% | 99% |
| San Francisco, CA | 2:38 | -0:15 | 1.12 | -1 | 1.28 | -4 | -1% | 100% |
| Seattle, WA | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. |
| Tampa, FL | 2:38 | +0:17 | 1.11 | +3 | 1.26 | +5 | 0% | 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 (April - June).
For more information on the UCR, contact Rich Taylor (Rich.Taylor@dot.gov).
