_dta:
  1.  by Jean Roth , jroth@nber.org , 1 Dec 2015

  obs:           430                          
 vars:            16                          1 Dec 2015 08:46
 size:         9,030                          (_dta has notes)
---------------------------------------------------------------------------------------------------------------
              storage   display    value
variable name   type    format     label      variable label
---------------------------------------------------------------------------------------------------------------
year            int     %8.0g                 
st_case         long    %12.0g                consecutive number
veh_no          byte    %8.0g                 vehicle number
a_body          byte    %8.0g                 vehicle body type
a_imp1          byte    %8.0g                 intial impact point
a_imp2          byte    %8.0g                 princial impact point
a_vroll         byte    %8.0g                 rollover
a_lic_s         byte    %8.0g                 license status
a_lic_c         byte    %8.0g                 license compliance
a_cdl_s         byte    %8.0g                 cdl status
a_mc_l_s        byte    %8.0g                 motorcycle license status
a_spveh         byte    %8.0g                 speeding vehicle
a_sbus          byte    %8.0g                 school bus
a_mod_yr        int     %8.0g                 vehicle model year
a_drdis         byte    %8.0g                 distracted driver
a_drdro         byte    %8.0g                 drowsy driver
---------------------------------------------------------------------------------------------------------------
Sorted by: st_case  veh_no