Frequencies for veh_man variable in vehicle dataset :

    VEHICLE |
   MANEUVER |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        508       80.76       80.76
          4 |          8        1.27       82.03
          5 |         22        3.50       85.53
          6 |          2        0.32       85.85
          7 |          1        0.16       86.01
          9 |         20        3.18       89.19
         12 |          4        0.64       89.83
         13 |         24        3.82       93.64
         14 |          1        0.16       93.80
         15 |          6        0.95       94.75
         16 |         12        1.91       96.66
         17 |         21        3.34      100.00
------------+-----------------------------------
      Total |        629      100.00

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