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

RELATION TO |
 TRAFFICWAY |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      5,962       59.62       59.62
          2 |        999        9.99       69.61
          3 |        438        4.38       73.99
          4 |      2,001       20.01       94.00
          5 |        156        1.56       95.56
          6 |        326        3.26       98.82
          7 |         31        0.31       99.13
          8 |         32        0.32       99.45
         10 |          8        0.08       99.53
         11 |          4        0.04       99.57
         99 |         43        0.43      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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