Frequencies for first 10,000 rows of no_lanes variable in accident dataset :

  NUMBER OF |
     TRAVEL |
      LANES |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        160        1.60        1.60
          2 |      6,960       69.60       71.20
          3 |      1,096       10.96       82.16
          4 |      1,237       12.37       94.53
          5 |        273        2.73       97.26
          6 |        150        1.50       98.76
          7 |         21        0.21       98.97
          9 |        103        1.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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