Frequencies for veh_no variable in person dataset :

  VEHICLE # |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        193       17.92       17.92
          1 |        626       58.12       76.04
          2 |        230       21.36       97.40
          3 |         24        2.23       99.63
          4 |          3        0.28       99.91
          5 |          1        0.09      100.00
------------+-----------------------------------
      Total |      1,077      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016