Welcome  to  Public  Health  moment from  the  University  of  Minnesota. Motor  vehicle  accidents  are the  top  cause  of  death  for  American  teenagers. In  an  effort  to  reduce  this  rate, many  states  have  adopted graduated  drivers  licensing  standards  or  GD  L, for  these  young  drivers. But  has  GD  L  been  effective? That's  what  University  of  Minnesota  researcher Pinar  Arata  mandate  is  trying  to  find  out. Based  on  our  research, GD  L  has  been  successful. We  confirmed  the  previous  results in  previous  literature  on  this, that  DL  has  been  successful  in reducing  team  fatality  rates. Depending  on  the  study  you  look  at  in the  state's  6%  to  20%  reduction. So  it's  quite  sizable, but  is  GD  L  success  due  to  improving  teen  driving  skills? Or  is  it  because  these  policies  are  actually limiting  the  amount  of  time  that  teens  are  driving? What  our  research  did  was  to  take  sort  of the  next  step  as  to  how  this  reduction  is  achieved. We  did  find  that  DL  is  effective  through  limiting the  teen  driving  instead  of  making  them  better  drivers. If  we  think  about ultimate  public  health  goal  is  to reduce  the  number  of  teen  fatalities. It  seems  like  TDL  is working  if  we  don't  worry  about  how  it  is  working. Is  it  the  restrictiveness  or  the  improving  it  is working  for  John  Finnegan  and  public  health  moment. I'm  Mark  Gerretsen.