Frequencies for veh_man variable in vehicle dataset :

    VEHICLE |
   MANEUVER |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        631       82.59       82.59
          3 |          1        0.13       82.72
          4 |         22        2.88       85.60
          5 |         30        3.93       89.53
          6 |          2        0.26       89.79
          7 |          1        0.13       89.92
          9 |         19        2.49       92.41
         13 |         30        3.93       96.34
         14 |          3        0.39       96.73
         15 |          4        0.52       97.25
         16 |         16        2.09       99.35
         17 |          5        0.65      100.00
------------+-----------------------------------
      Total |        764      100.00

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