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

Year 2006
Urban Interstate%Urban Other Arterial%Other Urban%Total Urban%All Systems%
Jan 37,284   4.7 Jan 84,104   4.5 Jan 34,153   3.6 Jan 155,541   4.4 Jan 232,856   4.1
Feb 35,273 0.8 Feb 79,799 0.5 Feb 32,625 -0.1 Feb 147,697 0.4 Feb 220,795 0.3
Mar 40,984 1.2 Mar 92,135 1.8 Mar 37,238 0.8 Mar 170,357 1.4 Mar 256,597 1.2
Q1 113,541 2.2 Q1 256,038 2.3 Q1 104,016 1.4 Q1 473,595 2.1 Q1 710,248 1.8
 
Apr 39,942   0.1 Apr 88,085   -0.7 Apr 36,495   -1 Apr 164,522   -0.5 Apr 250,383   -0.2
May 42,207 1.2 May 92,229 0.7 May 38,685 -0.6 May 173,122 0.5 May 264,217 0.1
Jun 42,382 0.6 Jun 91,696 0.3 Jun 37,332 -0.7 Jun 171,409 0.2 Jun 263,167 -0.1
Q2 124,531 0.6 Q2 272,010 0.1 Q2 112,512 -0.7 Q2 509,053 0.1 Q2 777,767 -0.1
1st Half 238,072 1.4 1st Half 528,047 1.2 1st Half 216,528 0.3 1st Half 982,647 1 1st Half 1,488,015 0.8
 
Jul 40,460   -1 Jul 90,197   -0.7 Jul 36,913   -1.3 Jul 167,571   -0.9 Jul 262,808   -1.4
Aug 41,462 0.6 Aug 93,463 -0.1 Aug 39,255 -0.1 Aug 174,180 0.1 Aug 266,528 -0.2
Sep 39,045 2.2 Sep 84,813 0.6 Sep 37,075 0.7 Sep 160,933 1 Sep 246,437 1.2
Q3 120,968 0.6 Q3 268,474 -0.1 Q3 113,243 -0.3 Q3 502,685 0 Q3 775,773 -0.2
 
Oct 40,194   3.3 Oct 90,302   2.6 Oct 37,269   3 Oct 167,765   2.9 Oct 258,136   2.6
Nov 39,323 1.5 Nov 86,242 0.6 Nov 36,466 0.7 Nov 162,031 0.8 Nov 245,840 0.8
Dec 38,726 1.5 Dec 86,998 0.5 Dec 36,159 0.9 Dec 161,883 0.8 Dec 246,316 0.9
Q4 118,243 2.1 Q4 263,542 1.2 Q4 109,895 1.5 Q4 491,680 1.5 Q4 750,293 1.4
2nd Half 239,211 1.3 2nd Half 532,016 0.6 2nd Half 223,138 0.6 2nd Half 994,365 0.8 2nd Half 1,526,066 0.6
Year 477,283 1.4 Year 1,060,063 0.9 Year 439,666 0.4 Year 1,977,012 0.9 Year 3,014,081 0.7

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