Table A-20,,,,,,,,
"Long-Distance Trips by Mode and Household Income, in Percent",,,,,,,,
,"Less than $25,000",,"$25,000 to $49,999",,"$50,000 or more   ",,Total,
,Percent,SE,Percent,SE,Percent,SE,Percent,SE
Personal vehicle,92.3,0.81,93.3,0.40,87.1,0.43,89.7,0.33
Air,3.0,0.34,3.8,0.29,10.2,0.38,7.3,0.27
Bus,3.7,0.57,2.1,0.21,1.7,0.16,2.1,0.13
Train,0.7,0.22,0.6,0.18,0.8,0.13,0.7,0.09
Other,0.3,0.28,0.1,0.05,0.2,0.06,0.2,0.05
Total,100.0,0.00,100.0,0.00,100.0,0.00,100.0,0.00
NOTE: SE = standard error.,,,,,,,,
"SOURCE: The 2001 National Household Travel Survey, preliminary long-distance trip file, U.S. Department of Transportation.",,,,,,,,