Frequencies for veh_man variable in vehicle dataset :

    VEHICLE |
   MANEUVER |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        402       85.17       85.17
          3 |          1        0.21       85.38
          4 |         14        2.97       88.35
          5 |         11        2.33       90.68
          9 |         10        2.12       92.80
         12 |          3        0.64       93.43
         13 |         16        3.39       96.82
         16 |         15        3.18      100.00
------------+-----------------------------------
      Total |        472      100.00

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