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Traffic Volume Trends - Urban
Estimated Vehicle Miles (Millions) and Percent Change from Same Period Previous Year

Year 2011
Urban Interstate%Urban Other Arterial%Other Urban%Total Urban%All Systems%
Jan 36,046   0.6 Jan 80,489   0.4 Jan 34,515   0.6 Jan 151,050   0.5 Jan 221,433   0.6
Feb 34,496 0.8 Feb 77,257 0.1 Feb 33,285 1.5 Feb 145,038 0.6 Feb 212,383 0.7
Mar 40,487 0.1 Mar 89,877 -1.3 Mar 38,401 -0.8 Mar 168,764 -0.9 Mar 249,081 -1.1
Q1 111,029 0.5 Q1 247,623 -0.3 Q1 106,201 0.4 Q1 464,852 0 Q1 682,897 0
 
Apr 40,000   -1.1 Apr 88,509   -2.1 Apr 38,537   -2.5 Apr 167,046   -2 Apr 247,991   -2.4
May 41,227 -0.6 May 88,539 -1.7 May 38,743 -1.2 May 168,508 -1.3 May 252,815 -1.8
Jun 42,247 -0.2 Jun 89,420 -1.2 Jun 38,585 -1.6 Jun 170,253 -1 Jun 256,619 -1.3
Q2 123,474 -0.7 Q2 266,469 -1.7 Q2 115,865 -1.8 Q2 505,807 -1.4 Q2 757,425 -1.8
1st Half 234,502 -0.1 1st Half 514,091 -1 1st Half 222,066 -0.8 1st Half 970,660 -0.7 1st Half 1,440,321 -1
 
Jul 40,142   -2.3 Jul 89,119   -2.6 Jul 38,453   -3 Jul 167,714   -2.6 Jul 258,819   -2.6
Aug 41,302 -1.6 Aug 91,068 -1.6 Aug 38,204 -2 Aug 170,574 -1.7 Aug 259,163 -2
Sep 39,335 -1.1 Sep 84,239 -1.6 Sep 35,728 -2.4 Sep 159,302 -1.7 Sep 240,417 -1.7
Q3 120,779 -1.7 Q3 264,426 -2 Q3 112,384 -2.5 Q3 497,590 -2 Q3 758,399 -2.1
 
Oct 40,312   -1.7 Oct 89,387   -2.1 Oct 37,039   -3.5 Oct 166,738   -2.3 Oct 250,626   -2.4
Nov 39,311 -0.8 Nov 84,467 -0.9 Nov 35,906 -1.8 Nov 159,685 -1.1 Nov 236,889 -1.1
Dec 40,040 1.6 Dec 87,634 0.7 Dec 38,389 0.7 Dec 166,063 0.9 Dec 243,245 1
Q4 119,663 -0.3 Q4 261,488 -0.8 Q4 111,334 -1.6 Q4 492,486 -0.8 Q4 730,760 -0.9
2nd Half 240,443 -1 2nd Half 525,915 -1.4 2nd Half 223,718 -2 2nd Half 990,076 -1.4 2nd Half 1,489,159 -1.5
Year 474,945 -0.6 Year 1,040,006 -1.2 Year 445,784 -1.4 Year 1,960,735 -1.1 Year 2,929,480 -1.2

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