Table - 1. Estimated Individual Monthly Motor Vehicle Travel in the United States

System	Month
System	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC
2006 Individual Monthly Vehicle-Miles of Travel in Billions*
Rural Interstate	19.2	18.0	21.2	21.7	22.6	22.7	24.0	23.4	21.2	22.4	21.6	21.6
Rural Other Arterial	29.4	28.0	32.8	32.4	34.6	35.1	36.6	35.5	33.2	35.0	32.3	32.4
Other Rural	28.6	27.0	32.1	31.6	33.8	33.9	34.5	33.5	31.1	33.0	29.9	30.4
Urban Interstate	36.8	34.9	40.5	39.5	41.7	41.9	40.0	41.0	38.6	39.7	38.8	38.3
Urban Other Arterial	83.3	79.0	91.3	87.2	91.3	90.9	89.4	92.6	84.0	89.5	85.5	86.2
Other Urban	34.0	32.5	37.1	36.4	38.7	37.2	36.8	39.2	37.0	37.1	36.4	36.1
All Systems	231.3	219.4	255.0	248.8	262.7	261.7	261.2	265.2	245.1	256.7	244.5	244.9
2007 Individual Monthly Vehicle-Miles of Travel in Billions*
Rural Interstate	18.9	17.7	21.3	21.7	22.9	22.8	24.2	24.1	21.1
Rural Other Arterial	29.0	27.5	33.2	32.4	35.0	35.1	37.0	36.4	33.1
Other Rural	28.2	26.2	32.3	31.4	34.1	33.8	34.6	34.0	31.1
Urban Interstate	36.5	34.5	40.1	39.4	41.6	41.4	40.2	41.4	38.3
Urban Other Arterial	82.8	78.0	91.1	87.0	92.0	90.4	89.4	93.2	82.7
Other Urban	33.9	32.1	37.3	36.3	39.2	37.1	37.1	39.8	36.7
All Systems	229.4	216.0	255.3	248.1	264.8	260.7	262.4	268.9	242.9
Percent Change In Individual Monthly Travel 2006vs.2007
Rural Interstate	-1.4	-1.8	0.7	0.0	1.4	0.7	0.7	3.0	-0.6
Rural Other Arterial	-1.3	-1.8	1.2	-0.1	1.1	0.0	0.9	2.7	-0.3
Other Rural	-1.4	-2.6	0.6	-0.8	0.9	-0.3	0.2	1.6	0.0
Urban Interstate	-0.9	-1.0	-0.9	-0.2	-0.2	-1.1	0.6	1.0	-0.7
Urban Other Arterial	-0.6	-1.3	-0.2	-0.3	0.7	-0.5	0.1	0.6	-1.6
Other Urban	-0.1	-1.3	0.5	-0.3	1.3	-0.2	0.8	1.3	-1.0
All Systems	-0.8	-1.5	0.1	-0.3	0.8	-0.4	0.4	1.4	-0.9

Table - 2. Estimated Cumulative Monthly Motor Vehicle Travel in the United States

System	Month
System	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC
2006 Cumulative Monthly Vehicle-Miles of Travel in Billions*
Rural Interstate	19.2	37.2	58.4	80.1	102.6	125.3	149.3	172.7	193.9	216.3	237.9	259.5
Rural Other Arterial	29.4	57.4	90.2	122.6	157.2	192.3	229.0	264.4	297.6	332.6	364.9	397.3
Other Rural	28.6	55.6	87.7	119.4	153.2	187.1	221.6	255.0	286.1	319.1	348.9	379.3
Urban Interstate	36.8	71.7	112.2	151.7	193.4	235.3	275.2	316.2	354.8	394.5	433.3	471.6
Urban Other Arterial	83.3	162.3	253.6	340.8	432.2	523.0	612.4	705.0	789.0	878.5	964.0	1050.2
Other Urban	34.0	66.5	103.6	140.0	178.7	215.9	252.7	291.9	328.9	366.0	402.4	438.5
All Systems	231.3	450.7	705.7	954.5	1217.2	1478.9	1740.1	2005.3	2250.3	2507.0	2751.5	2996.4
2007 Cumulative Monthly Vehicle-Miles of Travel in Billions*
Rural Interstate	18.9	36.6	57.9	79.6	102.5	125.3	149.5	173.6	194.7
Rural Other Arterial	29.0	56.5	89.6	122.0	157.0	192.1	229.1	265.5	298.6
Other Rural	28.2	54.5	86.8	118.2	152.3	186.1	220.7	254.7	285.8
Urban Interstate	36.5	71.0	111.2	150.6	192.2	233.6	273.8	315.2	353.5
Urban Other Arterial	82.8	160.8	251.9	338.9	430.9	521.3	610.7	703.9	786.6
Other Urban	33.9	66.0	103.3	139.6	178.8	215.9	253.0	292.8	329.4
All Systems	229.4	445.4	700.8	948.9	1213.7	1474.4	1736.8	2005.6	2248.5
Percent Change In Cumulative Monthly Travel 2006vs.2007
Rural Interstate	-1.4	-1.6	-0.8	-0.6	-0.1	0.0	0.1	0.5	0.4
Rural Other Arterial	-1.3	-1.6	-0.6	-0.4	-0.1	-0.1	0.1	0.4	0.3
Other Rural	-1.4	-2.0	-1.0	-1.0	-0.6	-0.5	-0.4	-0.1	-0.1
Urban Interstate	-0.9	-1.0	-0.9	-0.7	-0.6	-0.7	-0.5	-0.3	-0.4
Urban Other Arterial	-0.6	-0.9	-0.7	-0.6	-0.3	-0.3	-0.3	-0.2	-0.3
Other Urban	-0.1	-0.7	-0.3	-0.3	0.1	0.0	0.1	0.3	0.2
All Systems	-0.8	-1.2	-0.7	-0.6	-0.3	-0.3	-0.2	0.0	-0.1

Percent change is based on vehicle travel in millions of miles

September 2007 Traffic Volume Trends