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

  Number of |
     Travel |
      Lanes |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         64        0.64        0.64
          2 |      7,605       76.05       76.69
          3 |        573        5.73       82.42
          4 |      1,382       13.82       96.24
          5 |        104        1.04       97.28
          8 |        105        1.05       98.33
          9 |        167        1.67      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016