Even one beer can impair a driver. Better to designate a driver.
In France and in Russia, of all places, the limit is 0.0 for drivers. Same in Norway and Sweden. Sorry, but it makes a great deal of sense and stresses that paying full attention to driving is an extremely serious requirement in those countries. I don’t view it as anti-alcohol (yes, I am a wine drinker); only that if you want to go to a restaurant and drink to your heart’s content, someone else has to drive. This could have averted a lot of totally unnecessary tragedies, both for the drivers and those whose lives they have destroyed, for no good reason, not for any reason.