_dta:
  1.  by Jean Roth , jroth@nber.org , 22 May 2014

  obs:           423                          
 vars:             8                          22 May 2014 09:50
 size:         5,076                          (_dta has notes)
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              storage   display    value
variable name   type    format     label      variable label
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
state           byte    %8.0g                 State Number
st_case         long    %12.0g                Consecutive Number
eventnum        byte    %8.0g                 Event Number
vnumber1        byte    %8.0g                 Vehicle Number 1
aoi1            byte    %8.0g                 Area of Impact 1
soe             byte    %8.0g                 Sequence of Events
vnumber2        int     %8.0g                 Vehicle Number 2
aoi2            byte    %8.0g                 Area of Impact 2
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Sorted by:  st_case  eventnum