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

  Number of |
     Travel |
      Lanes |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        125        1.25        1.25
          2 |      7,649       76.49       77.74
          3 |        570        5.70       83.44
          4 |      1,323       13.23       96.67
          5 |         85        0.85       97.52
          8 |        112        1.12       98.64
          9 |        136        1.36      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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