[BrianHenryIE]

Anecdotally, drink driving is more common in California than in Ireland, maybe because I grew up with ads like these on TV:

https://youtu.be/xtJqw--DGl8

And a cursory search says:

> threat-based road safety communications that target affective (fear) and cognitive (perceived efficacy) mechanisms can positively affect driving behaviours

https://link.springer.com/article/10.1186/s12889-016-3227-2