Drink, death and driving: do blood alcohol content limit reductions improve road safety?

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This study exploits a natural experiment in Scotland where the legal blood alcohol content (BAC) limit was reduced from 0.8 to 0.5 mg per 100 ml of blood while staying constant in all other parts of the United Kingdom. Using a difference-in-differences design, we find that this change in the BAC level had no impact on either traffic accident or fatality rates.

Original languageEnglish
Pages (from-to)841-847
Number of pages7
JournalHealth Economics
Issue number7
Early online date13 Mar 2020
Publication statusPublished - 1 Jul 2020


  • road traffic fatalities
  • traffic accidents
  • difference in differences
  • blood alcohol content

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