Frequencies for rel_road variable in accident dataset :

Relation to |
    Roadway |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        412       72.15       72.15
          2 |         32        5.60       77.76
          3 |         12        2.10       79.86
          4 |         55        9.63       89.49
          5 |         21        3.68       93.17
          6 |         38        6.65       99.82
          9 |          1        0.18      100.00
------------+-----------------------------------
      Total |        571      100.00

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