The US has far more sprawl where people live in suburbs which are a significant distance from the closest restaurant, bar, etc. and public transportation ranges from unreliable to non-existent even during the workday. In most of the country, that's also be paired with high speed limits and road designs which encourage driving at or above the speed limit which increases the likelihood of a crash being fatal.

The default mindset is so heavily dominated by the assumption that you'll drive that the building codes in most of the country require bars to have significant parking available for customers, even if the bar is in a heavily urban neighborhood and the owner would prefer to use the space for seating.

The number of cars in the US is something like 10 times of the number of cars in the UK.

Also you have to consider a bunch of other variables such as the difference in the traveling distances between work, home, and play.

And take into consideration things such an increase of X in volume of traffic might increase deaths by kX. With k being 2 or 5 or 10.

And then the gap narrows.

Fair point - so taking the proportion of road deaths related to drink as the measure instead (which should control for your points to a great recent), 31% of US deaths are drink related, compared to 15.2% in the UK. (according to https://www.gov.uk/government/uploads/system/uploads/attachm...).

Not the 10x difference, but still 2x.