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

Relation to |
    Roadway |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,203       62.03       62.03
          2 |      1,184       11.84       73.87
          3 |        221        2.21       76.08
          4 |      1,829       18.29       94.37
          5 |        474        4.74       99.11
          6 |         75        0.75       99.86
          9 |         14        0.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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